A man does Tai chi in a nearly deserted park in lower Manhattan during the outbreak of the coronavirus disease (COVID-19) in New York City, New York, U.S., April 3, 2020. REUTERS/Mike Segar

A woman wearing a face mask follows a Tai Chi lesson displayed on a mobile phone placed on a tree at a park, as the country is hit by an outbreak of the novel coronavirus, in Shanghai, China March 11, 2020. Picture taken March 11, 2020. REUTERS/Aly Song

A woman wearing a face mask practises Tai Chi at a park, as the country is hit by an outbreak of the novel coronavirus, in Shanghai, China March 10, 2020. Picture taken March 10, 2020. REUTERS/Aly Song

Women practise tai-chi in the early morning at a park in the city's old district of Liwan in Guanghzou, China, September 6, 2019. REUTERS/Jorge Silva SEARCH "GUANGZHOU ANNIVERSARY" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

People perform a tai chi routine at a department store in Zhengzhou, Henan province, China, January 19, 2019. Picture taken January 19, 2019. REUTERS/Thomas Peter TO MATCH INSIGHT CHINA-ECONOMY/HENAN-CONSUMPTION

Occupy Central pro-democracy movement founder Benny Tai walks to a prison van as he is transfered to prison from Lai Chi Kok Reception Centre, after being jailed for the 2014 pro-democracy protests Occupy Central, also known as the "Umbrella Movement," in Hong Kong ,China April 29, 2019. REUTERS/Tyrone Siu

Kim Woodruff, a survivor of the Columbine shooting, teaches a tai chi class to fellow survivors during The Rebels Project annual survivor's gathering in Parker, Colorado, U.S., July 28, 2018. REUTERS/Leah Millis SEARCH "COLUMBINE SURVIVOR" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. THE IMAGES SHOULD ONLY BE USED TOGETHER WITH THE STORY - NO STAND-ALONE USES.

Rugby League - Super League - Salford Red Devils v Hull FC - AJ Bell Stadium, Salford, Britain - April 7, 2019 A Tai Chi performance on the pitch at half time Action Images/Ed Sykes

Bryan Goff, a polling place deputy, greets a voter as he enters precinct number 3401 located at the Taoist Tai Chi Society to cast his midterm election ballot in Tallahassee, Florida, U.S. November 6, 2018. REUTERS/Colin Hackley

Bryan Goff, a polling place deputy, greets a voter as she enters precinct number 3401 located at the Taoist Tai Chi Society to cast her midterm election ballot in Tallahassee, Florida, U.S. November 6, 2018. REUTERS/Colin Hackley

A group of retired foreigners attend a Tai Chi class, while staying at the Care Resort in Chiang Mai, Thailand April 6, 2018. Picture taken April 6, 2018. REUTERS/Jorge Silva

A group of retired foreigners attend a Tai Chi class, while staying at the Care Resort in Chiang Mai, Thailand April 6, 2018. Picture taken April 6, 2018. REUTERS/Jorge Silva

People practice Tai Chi during Chinese Lunar New Year celebrations at the Buddhist Zu Lai Temple in Cotia, Brazil February 25, 2018. REUTERS/Paulo Whitaker

Yan Zhang practices tai-chi in Retiro park in Madrid, Spain, March 7, 2017. REUTERS/Susana Vera SEARCH "RETIRO PARK" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Haircutter Sophie Lee (C) teaches Tai Chi to seniors in a cultural center in Brussels, Belgium June 28, 2017. REUTERS/Eric Vidal

Seniors practice Tai Chi in a cultural center in Brussels, Belgium June 28, 2017. REUTERS/Eric Vidal

Seniors practice Tai Chi in a cultural center in Brussels, Belgium June 28, 2017. REUTERS/Eric Vidal

Seniors practice Tai Chi in a cultural center in Brussels, Belgium June 28, 2017. REUTERS/Eric Vidal

Seniors practice Tai Chi in a cultural center in Brussels, Belgium June 28, 2017. REUTERS/Eric Vidal

Seniors practice Tai Chi in a cultural center in Brussels, Belgium June 28, 2017. REUTERS/Eric Vidal

Seniors practice Tai Chi in a cultural center in Brussels, Belgium June 28, 2017. REUTERS/Eric Vidal

Seniors practice Tai Chi in a cultural center in Brussels, Belgium June 28, 2017. REUTERS/Eric Vidal

Seniors practice Tai Chi in a cultural center in Brussels, Belgium June 28, 2017. REUTERS/Eric Vidal

Seniors practice Tai Chi in a cultural center in Brussels, Belgium June 28, 2017. REUTERS/Eric Vidal

Haircutter Sophie Lee teaches Tai Chi to seniors in a cultural center in Brussels, Belgium June 28, 2017. REUTERS/Eric Vidal

Seniors practice Tai Chi in a cultural center in Brussels, Belgium June 28, 2017. REUTERS/Eric Vidal

Haircutter Sophie Lee (C) teaches Tai Chi to seniors in a cultural center in Brussels, Belgium June 28, 2017. REUTERS/Eric Vidal

Haircutter Sophie Lee (C) teaches Tai Chi to seniors in a cultural center in Brussels, Belgium June 28, 2017. REUTERS/Eric Vidal

Eighty-three year-old Jim Lennon does tai-chi, lead by Lyne Breault from Mind Body Systems and part of "The Boston Parks Fitness Series," in a park in the Roslindale neighborhood of Boston, Massachusetts, U.S., June 27, 2017. REUTERS/Brian Snyder

Eighty-three year-old Jim Lennon (C) does tai-chi, lead by Lyne Breault from Mind Body Systems and part of "The Boston Parks Fitness Series," in a park in the Roslindale neighborhood of Boston, Massachusetts, U.S., June 27, 2017. REUTERS/Brian Snyder

Eighty-three year-old Jim Lennon (C) does tai-chi, lead by Lyne Breault from Mind Body Systems and part of "The Boston Parks Fitness Series," in a park in the Roslindale neighborhood of Boston, Massachusetts, U.S., June 27, 2017. REUTERS/Brian Snyder

Sixty-seven year-old Graciela Calvo does tai-chi, lead by Lyne Breault from Mind Body Systems and part of "The Boston Parks Fitness Series," in a park in the Roslindale neighborhood of Boston, Massachusetts, U.S., June 27, 2017. REUTERS/Brian Snyder

Sixty-seven year-old Graciela Calvo does tai-chi, lead by Lyne Breault from Mind Body Systems and part of "The Boston Parks Fitness Series," in a park in the Roslindale neighborhood of Boston, Massachusetts, U.S., June 27, 2017. REUTERS/Brian Snyder

Eighty-three year-old Jim Lennon (R) does tai-chi, lead by Lyne Breault from Mind Body Systems and part of "The Boston Parks Fitness Series," in a park in the Roslindale neighborhood of Boston, Massachusetts, U.S., June 27, 2017. REUTERS/Brian Snyder

Eighty-three year-old Jim Lennon does tai-chi, lead by Lyne Breault from Mind Body Systems and part of "The Boston Parks Fitness Series," in a park in the Roslindale neighborhood of Boston, Massachusetts, U.S., June 27, 2017. REUTERS/Brian Snyder

Eighty-three year-old Jim Lennon (C) does tai-chi, lead by Lyne Breault from Mind Body Systems and part of "The Boston Parks Fitness Series," in a park in the Roslindale neighbourhood of Boston, Massachusetts, U.S., June 27, 2017. REUTERS/Brian Snyder

People take part in a mass Tai Chi class as part of All United for Tai Chi, a national movement to improve health, at the Revolution Monument in Mexico City, Mexico April 23, 2017. REUTERS/Jose Luis Gonzalez TPX IMAGES OF THE DAY

People take part in a mass Tai Chi class as part of All United for Tai Chi, a national movement to improve health, at the Revolution Monument in Mexico City, Mexico April 23, 2017. REUTERS/Jose Luis Gonzalez

People take part in a mass Tai Chi class as part of All United for Tai Chi, a national movement to improve health, at the Revolution Monument in Mexico City, Mexico April 23, 2017. REUTERS/Jose Luis Gonzalez

People take part in a mass Tai Chi class as part of All United for Tai Chi, a national movement to improve health, at the Revolution Monument in Mexico City, Mexico April 23, 2017. REUTERS/Jose Luis Gonzalez

People take part in a mass Tai Chi class as part of All United for Tai Chi, a national movement to improve health, at the Revolution Monument in Mexico City, Mexico April 23, 2017. REUTERS/Jose Luis Gonzalez

People take part in a mass Tai Chi class as part of All United for Tai Chi, a national movement to improve health, at the Revolution Monument in Mexico City, Mexico April 23, 2017. REUTERS/Jose Luis Gonzalez

Two men practise Tai Chi hand-pushing at a park in Shanghai, China August 6, 2016. REUTERS/Aly Song

People perform tai chi as they celebrate Lunar New Year in Chinatown in Manhattan, New York City, U.S., January 28, 2017. REUTERS/Stephen Yang

A man practices Tai Chi in a park on a sunny winter day in Beijing, China, January 2, 2017. REUTERS/Thomas Peter

Macau junket operator Cheung Chi-tai, with his aide (R), tries to block journalists, leaves a court hearing on charges of money laundering through bank accounts, in Hong Kong, China October 14, 2016. REUTERS/Bobby Yip

Macau junket operator Cheung Chi-tai and wife Ng Chor-har (L) arrive at a court on charges of money laundering through bank accounts in Hong Kong, China, September 26, 2016. REUTERS/Bobby Yip

People practice Tai Chi on the banks of the river Seine on the opening day of the Paris Plages beach festival as summer temperatures hit Paris, France, July 20, 2016. REUTERS/Charles Platiau

People perform Tai Chi on the Bund in front of the financial district of Pudong in Shanghai, China, March 25, 2016. REUTERS/Aly Song

Macau casino junket operator Cheung Chi-tai (C), wearing a mask and hiding his face, is accompanied by two unidentified men as he leaves a court in Hong Kong, China, September 24, 2015. A Hong Kong court on Thursday adjourned until March the trial of Cheung who faces three charges of laundering HK$1.8 billion ($232 million) through accounts in the financial centre. REUTERS/Bobby Yip

Macau casino junket operator Cheung Chi-tai, wearing a mask and hiding his face, leaves a court in Hong Kong, China, September 24, 2015. A Hong Kong court on Thursday adjourned until March the trial of Cheung who faces three charges of laundering HK$1.8 billion ($232 million) through accounts in the financial centre. REUTERS/Bobby Yip

News photographers take photos of Macau casino junket operator Cheung Chi-tai, wearing a mask and holding a jacket, walking into a court in Hong Kong, China, September 24, 2015. A Hong Kong court on Thursday adjourned until March the trial of Cheung who faces three charges of laundering HK$1.8 billion ($232 million) through accounts in the financial centre. REUTERS/Bobby Yip

Macau casino junket operator Cheung Chi-tai, wearing a mask and holding a jacket, walks into a court in Hong Kong, China, September 24, 2015. A Hong Kong court on Thursday adjourned until March the trial of Cheung who faces three charges of laundering HK$1.8 billion ($232 million) through accounts in the financial centre. REUTERS/Bobby Yip

People practise Tai Chi in Havana, January 23, 2015. The United States and Cuba began historic discussions on restoring diplomatic relations on Thursday, aiming to reach agreement on the opening of embassies in each other's countries. REUTERS/Alexandre Meneghini (CUBA - Tags: POLITICS SOCIETY)

Women practice tai chi with traditional Chinese fans during their morning exercise at a park in Guangzhou, Guangdong province, November 6, 2014. REUTERS/Alex Lee (CHINA - Tags: SOCIETY)

Johney Yu (2nd R), 75, who emigrated from China 40 years ago, and Diana Yang (L), who emigrated from China 28 years ago, practice tai chi at a daily class in Alhambra, home of many Chinese and Vietnamese migrants, in California August 14, 2014. Los Angeles is a culturally thriving city and one of the most ethnically diverse in the United States, with a population that is 48.5 percent Latino and 11.3 percent Asian, according to a 2010 census. Immigration has become a hot button issue ahead of U.S. midterm elections on November 4, and despite arguments from the White House that legal migration benefits businesses, a recent opinion poll found most Americans believe migrants place a burden on the economy. Picture taken August 14, 2014. REUTERS/Lucy Nicholson (UNITED STATES - Tags: SOCIETY IMMIGRATION HEALTH)

ATTENTION EDITORS: PICTURE 25 OF 28 FOR WIDER IMAGE STORY 'LOS ANGELES, THE WORLD IN A CITY'
SEARCH 'NICHOLSON CENSUS' FOR ALL IMAGES

People practise Tai Chi at the the seafront boulevard Malecon in Havana, October 28, 2014. REUTERS/Alexandre Meneghini (CUBA - Tags: SOCIETY)

People practise Tai Chi at the the seafront boulevard Malecon in Havana, October 28, 2014. REUTERS/Alexandre Meneghini (CUBA - Tags: SOCIETY)

A woman practices Tai Chi, a Chinese martial art, at a residential area of Shanghai July 26, 2014. REUTERS/Carlos Barria (CHINA - Tags: SOCIETY)

A woman practices Tai Chi, a Chinese martial art, during a lunch break at a financial district in Beijing, May 21, 2014.
REUTERS/Kim Kyung-Hoon (CHINA - Tags: SOCIETY)