Women make the Vietnamese traditional beef noodle "Pho" at a breakfast restaurant in Hanoi, Vietnam July 18, 2018. REUTERS/Kham

Noodle with egg is seen on a table along a street during breakfast in Phnom Penh, Cambodia July 18, 2018. REUTERS/Samrang Pring

A bowl of Vietnamese chicken noodle soup (Pho) is seen at a restaurant in Hanoi, Vietnam September 28, 2017. REUTERS/Kham

A researcher holds up a pair of chopsticks that can simulate taste via electrodes during a demonstration at National University of Singapore campus in Singapore April 13, 2017. REUTERS/Edgar Su

A prototype of a pair of chopsticks and a bowl that can simulate taste via electrodes is displayed during a demonstration at National University of Singapore campus in Singapore April 13, 2017. REUTERS/Edgar Su

Wet wipes in a condom-shaped wrapper and chopsticks are packaged for customers at Ke'er restaurant (Shell in English) in Beijing, China, May 26, 2016. With drinks served in breast-shaped cups and beers opened with bottle openers shaped like a wooden penis, the father and daughter team behind a Beijing S&M restaurant are encouraging customers to mix food with sex. Owner Lu Lu said business has been good since opening just under a year ago, with young Chinese streaming in to feast on seafood, such as lobster, under the gaze of mannequins wearing bondage gear. REUTERS/Kim Kyung-Hoon SEARCH "BEIJING SHELL" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES.

Restaurant employees arrange an 88 kg plate of yusheng or raw fish decorated to mark the year of the monkey before a "lo hei" dinner ahead of the Lunar New Year in Singapore January 8, 2016. Yu sheng is served to raise "good luck" for the new year in a celebration known as "lo hei", which is Cantonese for "to toss luck". Participants will toss the shredded ingredients into the air with chopsticks while saying auspicious wishes aloud to mark the start of a prosperous new year. Picture taken January 8, 2016. REUTERS/Edgar Su

Guests toss an 88 kg plate of yusheng or raw fish during a "lo hei" dinner ahead of the Lunar New Year in Singapore January 8, 2016. Yu sheng is served to raise "good luck" for the new year in a celebration known as "lo hei", which is Cantonese for "to toss luck". Participants will toss the shredded ingredients into the air with chopsticks while saying auspicious wishes aloud to mark the start of a prosperous new year. Picture taken January 8, 2016. REUTERS/Edgar Su

A man eats a cocoon of an insect at a park during an ethnic Hani minority event on the day before the summer solstice, in Mojiang, Yunnan province, China, June 21, 2015. Hani minority residents in Yunnan usually get together and mark the summer solstice by eating cooked arthropods including scorpions, centipedes, cockroaches, cicadas and so on. Picture taken June 21, 2015. REUTERS/Wong Campion

A woman uses chopsticks to eat sushi at a restaurant in La Serena, Chile, June 18, 2015. International Sushi Day has been marked on June 18 annually since 2009. REUTERS/Marcos Brindicci

Britain's Catherine, Duchess of Cambridge, teaches a girl how to use chopsticks as she meets with children at the newly established 23rd Poplar Beaver Scout Colony in east London December 16, 2014. REUTERS/Ben Stansall/Pool (BRITAIN - Tags: ROYALS)

Britain's Catherine, Duchess of Cambridge, teaches a girl how to use chopsticks as she meets with children at the newly established 23rd Poplar Beaver Scout Colony in east London December 16, 2014. REUTERS/Ben Stansall/Pool (BRITAIN - Tags: ROYALS)

Chinese pop duo the Chopstick Brothers, Wang Taili (L) and Xiao Yang, pose on the red carpet as they attends the 2014 Mnet Asian Music Awards (MAMA) in Hong Kong, December 3, 2014. REUTERS/Tyrone Siu (CHINA - Tags: ENTERTAINMENT)

The Chopstick Brothers pose backstage with their award for favorite international song for "Little Apple" during the 42nd American Music Awards in Los Angeles, California November 23, 2014. REUTERS/Danny Moloshok (UNITED STATES - Tags: ENTERTAINMENT) (MUSIC-AMERICANMUSICAWARDS-BACKSTAGE)

The Chopstick Brothers pose backstage with their award for favorite international song for "Little Apple" during the 42nd American Music Awards in Los Angeles, California November 23, 2014. REUTERS/Danny Moloshok (UNITED STATES - Tags: ENTERTAINMENT) (MUSIC-AMERICANMUSICAWARDS-BACKSTAGE)

The Chopstick Brothers pose backstage with their award for favorite international song for "Little Apple" during the 42nd American Music Awards in Los Angeles, California November 23, 2014. REUTERS/Danny Moloshok (UNITED STATES - Tags: ENTERTAINMENT) (MUSIC-AMERICANMUSICAWARDS-BACKSTAGE)

The Chopstick Brothers pose backstage with their award for favorite international song for "Little Apple" during the 42nd American Music Awards in Los Angeles, California November 23, 2014. REUTERS/Danny Moloshok (UNITED STATES - Tags: ENTERTAINMENT) (MUSIC-AMERICANMUSICAWARDS-BACKSTAGE)

The Chopstick Brothers perform "Little Apple" during the 42nd American Music Awards in Los Angeles, California November 23, 2014. REUTERS/Mario Anzuoni (UNITED STATES - Tags: ENTERTAINMENT) (MUSIC-AMERICANMUSICAWARDS-SHOW)

Musical act The Chopstick Brothers arrive at the 42nd American Music Awards in Los Angeles, California November 23, 2014. REUTERS/Danny Moloshok (UNITED STATES - Tags: ENTERTAINMENT) (MUSIC-AMERICANMUSICAWARDS-ARRIVALS)

A relative of Yotsuno Kanno uses chopsticks to put her remains into a family grave during a small ceremony at a cemetery in the evacuated town of Minamitsushima inside the exclusion zone in Fukushima prefecture September 21, 2013. Yotsuno Kanno, who was evacuated after the disaster at Daiichi plant in 2011 with the rest of people from Minamitsushima, died in a temporary accommodation in May this year two weeks short of her 100th birthday. Former residents of evacuated towns can visit their homes once a month with special permissions but are not allowed to stay overnight inside the exclusion zone. A total of 160,000 people were ordered to leave their homes around Daiichi plant after the government announced the evacuation following the nuclear disaster in March 2011. Picture taken September 21, 2013. REUTERS/Damir Sagolj (JAPAN - Tags: DISASTER SOCIETY ENVIRONMENT)

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A man eats noodles for lunch at a migrant workers' village in Beijing February 19, 2013. China's wheat crop has suffered more severely than previously thought from frost in the growing period and rain during the harvest, and import demand to compensate for the damage could see the country eclipse Egypt as the world's top buyer. The wheat crop, hit by frost and rains in China, cannot be milled into flour and most of it will be used to feed animals. Picture taken on February 19, 2013. To match Exclusive CHINA-WHEAT/ REUTERS/Kim Kyung-Hoon (CHINA - Tags: FOOD BUSINESS EMPLOYMENT)

A cobra embryo is displayed at a snake farm ahead of the Spring Festival in Tainan, southern Taiwan, February 5, 2013. Eating cobra eggs with embryo is believed to be good for health, according to snake farm owner Huang Kuo-nan. The Lunar New Year, also known as the Spring Festival, begins on February 10 and marks the start of the Year of the Snake, according to the Chinese zodiac. Picture taken February 5, 2013. REUTERS/Pichi Chuang (TAIWAN - Tags: SOCIETY FOOD)

A woman eats a tuna sushi made from a 222 kg (489 lbs) bluefin tuna at a sushi restaurant outside Tsukiji fish market in Tokyo January 5, 2013. Kiyomura Co's President Kiyoshi Kimura, who runs a chain of sushi restaurants, won the bid for the tuna caught off Oma, Aomori prefecture, northern Japan, with a record 155.40 million yen (1,762,700 USD) at the fish market's first tuna auction this year.
REUTERS/Toru Hanai (JAPAN - Tags: ANIMALS BUSINESS FOOD SOCIETY TRAVEL)

U.S. Secretary of Defense Leon Panetta uses chopsticks as he eats lunch with cadets in the mess hall at the PLA Engineering Academy of Armored Forces in Beijing September 19, 2012. China's leader-in-waiting Xi Jinping held on Wednesday his first talks with a foreign official since vanishing from the public eye nearly two weeks ago, telling Panetta he wanted to advance ties with the United States. REUTERS/Larry Downing (CHINA - Tags: POLITICS MILITARY)

Taoist priests squat on stone seats as they have dinner at Yuquan Yuan (Jade Spring Taoist Temple) at the foot of Mount Hua, in Huayin, Shaanxi province July 4, 2012. More than 60 priests from all over China gathered at the temple for a two-month course on Taoist music, which is an essential element to many Taoist ceremonies. Picture taken July 4, 2012. REUTERS/Rooney Chen (CHINA - Tags: SOCIETY RELIGION)

Yurika Miki eats raw beef liver sashimi at a restaurant in Tokyo June 28, 2012. While Japan has a reputation as the home of sushi and sashimi, one item is about to be taken off the menu as Japan's government looks to ban the popular dish of raw liver in sashimi style. The dish, which consists of raw beef liver sliced up into bite sized chunks and then served with onions and sauce had become a popular dish across the country. Picture taken June 28, 2012. REUTERS/Toru Hanai (JAPAN - Tags: BUSINESS FOOD SOCIETY)

Kuwaiti entrepreuner Sharouq al-Khalil shows her Kuwaiti food styled like Japanese sushi for her new company Sushi Q8T at an exhibit for young business owners in Kuwait City April 12, 2012. REUTERS/Stephanie McGehee (KUWAIT - Tags: BUSINESS FOOD SOCIETY)

Migrant workers eat their lunch on a footpath outside a construction site in central Beijing April 2, 2012. As the number of adults flowing into the workforce slows, China can no longer attract manufacturing with the promise that an unending pool of rural migrants will keep its wages down. REUTERS/David Gray (CHINA - Tags: BUSINESS CONSTRUCTION SOCIETY EMPLOYMENT)

Bodyguard trainees eat dinner after a training session in Sanya, Hainan province March 17, 2012. A total of 36 trainees, mostly college graduates and special forces, participated in the training session. All trainees will have to undergo 28 days of training to develop sufficient skills to serve their clients, according to Tianjiao Special Guard/Security Consultant Ltd. Co. The company will then offer the best trainee a chance to attend further study at the International Security Academy in Israel. Picture taken March 17, 2012. REUTERS/Tyrone Siu (CHINA - Tags: SOCIETY)

Marilyn Berenzweig uses chopsticks to stir noodles that she is cooking for dinner on an outdoor stove in their camp that is part of a homeless community near Lakewood, New Jersey January 9, 2012. The community, which has existed in the forest for several years, has seen dozens of people taking shelter there during times of economic duress. Inhabitants are currently facing pressure from the township of Lakewood to dismantle the structures and leave. REUTERS/Lucas Jackson (UNITED STATES - Tags: SOCIETY POVERTY)

A woman fans coals to heat up a cooker on the railway track in downtown Hanoi December 27, 2011. The Kham Thien railway hamlet, a 200-meter (656-ft) stretch of residences along the railway track in center Hanoi, is one of most dangerous traffic problems in the country. Despite the many accidents and deaths every year and warnings from authorities, people continue to live and make their livelihoods near the track. REUTERS/Kham (VIETNAM - Tags: SOCIETY TRANSPORT)

Lam Tak-fai, acting head of Ports and Maritime Command, arranges rhino horns, part of a 33 rhino horns, ivory chopsticks and bracelets shipment seized by the Hong Kong Customs and Excise Department, during a news conference in Hong Kong November 15, 2011. Hong Kong Customs seized on Tuesday a total of 33 rhino horns, 758 ivory chopsticks and 127 ivory bracelets, worth about HK$17.4 million ($2.23 million), inside a container shipped from Cape Town, South Africa, according the a customs press release. REUTERS/Bobby Yip (CHINA - Tags: CRIME LAW BUSINESS ENVIRONMENT ANIMALS)

Ivory chopsticks seized by the Hong Kong Customs and Excise Department are displayed during a news conference in Hong Kong November 15, 2011. Hong Kong Customs seized on Tuesday a total of 33 rhino horns, 758 ivory chopsticks and 127 ivory bracelets, worth about HK$17.4 million ($2.23 million), inside a container shipped from Cape Town, South Africa, according the a customs press release. REUTERS/Bobby Yip (CHINA - Tags: CRIME LAW BUSINESS ENVIRONMENT ANIMALS)

Customs officers stand next to part of a 33 rhino horns shipment seized by Customs and Excise Department, during a news conference in Hong Kong November 15, 2011. Hong Kong Customs seized on Tuesday a total of 33 rhino horns, 758 ivory chopsticks and 127 ivory bracelets, worth about HK$17.4 million ($2.23 million), inside a container shipped from Cape Town, South Africa, according the a customs press release. REUTERS/Bobby Yip (CHINA - Tags: CRIME LAW BUSINESS ENVIRONMENT ANIMALS)

Part of a shipment of 33 rhino horns seized by Hong Kong Customs and Excise Department is displayed during a news conference in Hong Kong November 15, 2011. Hong Kong Customs seized on Tuesday a total of 33 rhino horns, 758 ivory chopsticks and 127 ivory bracelets, worth about HK$17.4 million ($2.23 million), inside a container shipped from Cape Town, South Africa, according the a customs press release. REUTERS/Bobby Yip (CHINA - Tags: CRIME LAW BUSINESS ENVIRONMENT ANIMALS TPX IMAGES OF THE DAY)

A man eats his lunch of noodles while monitoring stock market prices inside a brokerage in Taipei August 10, 2011. Taiwan stocks rose 3.25 percent on Wednesday, their biggest daily percentage gain in over two years, with Cathay Financial in the lead after the island's top financial holding firm said it would buy back shares. REUTERS/Pichi Chuang (TAIWAN - Tags: BUSINESS FOOD)

A family of ethnic Chinese Malaysians gather to offer prayers to their ancestors during Qing Ming Festival or Ancestors Day at a cemetery in Petaling Jaya outside Kuala Lumpur April 3, 2011. The Chinese visit the burial grounds of their ancestors during Qing Ming Festival in honour of the dead by offering food, tea, wine, chopsticks, joss paper accessories and libations to the ancestors. It also called the "Tomb Sweeping Day" as the Chinese will sweep and clean the tombs of their ancestors during the festival. REUTERS/Bazuki Muhammad (MALAYSIA - Tags: SOCIETY RELIGION IMAGES OF THE DAY)

A bowl of pho, Vietnam's signature beef noodle soup, is seen at a restaurant in Capital Garden Hotel in Hanoi March 30, 2011. The restaurant reported full bookings on weekends by people keen to eat pho made with slices of pricey Japanese Kobe beef, despite worries about traces of radioactivity found in food near Japan's damaged Fukushima nuclear power plant after the area was hit by an earthquake and tsunami. Kobe beef pho costs about 850,000 dong ($40) a bowl -- as much as 40 times the price of a standard bowl of Vietnam's de facto national dish on the streets of Hanoi. REUTERS/Kham (VIETNAM - Tags: FOOD SOCIETY DISASTER BUSINESS)

An religious offering of food and alcoholic drinks placed on a mat with chopsticks and glasses sits on the bank of the partially frozen Songhua River in the northern city of Harbin, Heilongjiang province March 28, 2011. REUTERS/David Gray (CHINA - Tags: ENVIRONMENT RELIGION)

A woman eats canned food at an evacuation center for earthquake and tsunami victims in Oshima island, northern Japan, March 27, 2011. REUTERS/Kim Kyung-Hoon (JAPAN - Tags: DISASTER SOCIETY)

A woman who lost her house after an earthquake and tsunami struck the area, eats cup noodles at an evacuation centre in Kesennuma, northern Japan, March 17, 2011. REUTERS/Kim Kyung-Hoon (JAPAN - Tags: DISASTER ENVIRONMENT)

A woman shares her food with her dog at an evacuation center for pets and their owners near a devastated area hit by an earthquake and tsunami in Kesennuma, north Japan March 17, 2011. REUTERS/Kim Kyung-Hoon (JAPAN - Tags: DISASTER IMAGES OF THE DAY ANIMALS)

Tennis player Caroline Wozniacki of Denmark holds chopsticks during a promotional event at a Chinese restaurant in Hong Kong January 4, 2011, one day before she takes part in the Tennis Classic in the territory. REUTERS/Bobby Yip (CHINA - Tags: SPORT TENNIS)

A security guard stands next to a tree made from disposable chopsticks during a public campaign held by Greenpeace outside a shopping mall in Beijing December 18, 2010. Four trees made from more than 80,000 pairs of disposable chopsticks, were on display during the event aimed at awakening people's forest conservation awareness, according to the organizer. REUTERS/Grace Liang (CHINA - Tags: ENVIRONMENT SOCIETY)

A child looks at a tree made from disposable chopsticks during a public campaign held by Greenpeace outside a shopping mall in Beijing December 18, 2010. Four trees made from more than 80,000 pairs of disposable chopsticks were on display during the event aimed at awakening people's forest conservation awareness, according to the organizer. REUTERS/Grace Liang (CHINA - Tags: ENVIRONMENT SOCIETY)

A couple eats at a branch of Japanese fast-food restaurant Yoshinoya Co. in Tokyo December 1, 2010. Picture taken December 1, 2010. To match Special Report SEVEN-SAMURAI REUTERS/Yuriko Nakao (JAPAN - Tags: BUSINESS FOOD)

A migrant labourer holding chopsticks waits for his lunch at a construction site in Beijing, August 31, 2010. The Chinese government's efforts to curb price rises in the property market are beginning to work, and if the market defies cooling efforts officials should impose more measures, the nation's top official paper said on Tuesday. REUTERS/Jason Lee (CHINA - Tags: BUSINESS POLITICS EMPLOYMENT CONSTRUCTION IMAGES OF THE DAY)

An employee eats lunch at a workers' canteen in Su Yin Denim Co. Ltd. in Jiangyin, Jiangsu province June 7, 2010. The factory, which has some 200 workers, produces denim for jeans that are exported to the U.S. and Europe. REUTERS/Aly Song (CHINA - Tags: BUSINESS)

A migrant worker eats noodles in a local restaurant in Shanghai March 11, 2010. REUTERS/Nir Elias (CHINA - Tags: SOCIETY)

Volunteer Xiao Xin holds a rice bowl and chopsticks while standing in front of a sign during a snowfall on the outskirts of Beijing November 12, 2009. The organizer Oxfam Hong Kong, an international NGO, held the activity to call on U.S. President Barack Obama, who will visit China next week, to keep his public promises and ensure that the U.S. plays a key leadership role in the climate negotiations culminating at the UN Climate Change Conference in Copenhagen in December. The Chinese characters on the banner reads "Against Climate Change for Poverty People". REUTERS/Jason Lee (CHINA POLITICS ENVIRONMENT)

Volunteer Xiao Xin holds a rice bowl and chopsticks while standing in front of a sign during a snowfall on the outskirts of Beijing November 12, 2009. The organizer Oxfam Hong Kong, an international NGO, held the activity to call on U.S. President Barack Obama, who will visit China next week, to keep his public promises and ensure that the U.S. plays a key leadership role in the climate negotiations culminating at the UN Climate Change Conference in Copenhagen in December. The Chinese characters on the banner reads "Against Climate Change for Poverty People". REUTERS/Jason Lee (CHINA POLITICS ENVIRONMENT)

Yao Chunzi separates egg yolk and white with chopsticks during the German TV show "Wetten dass...?" (Bet it...?) in Braunschweig, November 7, 2009. REUTERS/Axel Heimken/Pool (GERMANY ENTERTAINMENT)

Yao Chunzi separates egg yolk and white with chopsticks during the German TV show "Wetten dass...?" (Bet it...?) in Braunschweig, November 7, 2009. REUTERS/Axel Heimken/Pool (GERMANY ENTERTAINMENT)

Participants eat lunch at the backstage during the MODELS 2009 fashion model audition in Tokyo October 18, 2009. The event, part of Japan Fashion Week, has 142 contestants taking part in the audition. REUTERS/Toru Hanai (JAPAN FASHION)

A man in traditional Korean costume uses his mobile phone after a ceremony celebrating the Coming-Of-Age Day at a university in Seoul May 18, 2009. The traditional Coming-Of-Age ceremony is a ceremony that endows boys and girls at the age of 20, who have lived under the protection of families, with individual authorities. REUTERS/Jo Yong-Hak (SOUTH KOREA SOCIETY)

A man eats in front of computer monitors showing stock market prices at a securities company in Taipei May 7, 2009. A rally in Asian shares continued on Thursday as encouraging signs about the health of U.S. banks and the state of the global economy bolstered riskier assets such as oil and hurt safe-havens such as the yen. REUTERS/Nicky Loh (TAIWAN BUSINESS)

A coal miner covered in coal dust sits on the side of a road as he eats his food near the town of Kangding in Sichuan province February 23, 2009. The global financial crisis has sent Chinese growth tumbling to below 8 percent, a level widely regarded as a minimum for China to create enough jobs for those entering the workforce. In some rural provinces, China's biggest source of migrant workers, local authorities say that up to 80 percent of labourers are once again on city streets looking for work. REUTERS/David Gray (CHINA)

People take part in a 200-table 'lo-hei' dinner on Renri, the seventh day of Chinese New Year, in Singapore February 1, 2009. In a celebration known as "lo hei", which is Cantonese for "to toss luck", families will toss the shredded ingredients into the air with chopsticks while saying auspicious wishes out loud to mark the start of a prosperous new year. It is customary that the higher you toss, the greater your fortunes. REUTERS/Tim Chong (SINGAPORE)

A kitchen staff prepares "yu sheng", a raw fish salad, before a mass "lo hei" dinner on Renri, the seventh day of the Chinese New Year, in Singapore February 1, 2009. Yu sheng is served to raise "good luck" for the new year and is usually eaten on Renri. In a celebration known as "lo hei", which is Cantonese for "to toss luck", families will toss the shredded ingredients into the air with chopsticks while saying auspicious wishes out loud to mark the start of a prosperous new year. REUTERS/Tim Chong (SINGAPORE)

A man receives a food handout at a park in Nagoya, central Japan December 25, 2008. REUTERS/Issei Kato (JAPAN)