Vietnamese tourists dressed in traditional Thai costumes visit Wat Arun temple ahead of the Chinese Lunar New Year in Bangkok, Thailand January 18, 2023. REUTERS/Chalinee Thirasupa 

Vietnamese tourists dressed in traditional Thai costumes take a selfie at Wat Arun temple ahead of the Chinese Lunar New Year in Bangkok, Thailand January 18, 2023. REUTERS/Chalinee Thirasupa 

Clients, wearing protective face masks, buy gold at a jewellery shop on God of Wealth Day, which falls on the 10th day of Lunar New Year, as Vietnamese hope buying gold would bring good luck, in Hanoi, Vietnam, February 21, 2021. REUTERS/Kham 

Clients, wearing protective face masks, queue up at a jewellery shop on God of Wealth Day, which falls on the 10th day of Lunar New Year, as Vietnamese hope buying gold would bring good luck, in Hanoi, Vietnam, February 21, 2021. REUTERS/Kham 

Clients, wearing protective face masks, queue up at a jewellery shop on God of Wealth Day, which falls on the 10th day of Lunar New Year, as Vietnamese hope buying gold would bring good luck, in Hanoi, Vietnam, February 21, 2021. REUTERS/Kham 

A man, wearing a protective face mask, shows a gold ring at a jewellery shop on God of Wealth Day, which falls on the 10th day of Lunar New Year, as Vietnamese hope buying gold would bring good luck, in Hanoi, Vietnam, February 21, 2021. REUTERS/Kham 

A gold shop employee, wearing a protective face mask, shows a gold buffalo at a jewellery shop on God of Wealth Day, which falls on the 10th day of Lunar New Year, as Vietnamese hope buying gold would bring good luck, in Hanoi, Vietnam, February 21, 2021. REUTERS/Kham 

A gold shop employee, wearing a protective face mask, is dressed as the God of Wealth at a jewellery shop on God of Wealth Day, which falls on the 10th day of Lunar New Year, as Vietnamese hope buying gold would bring good luck, in Hanoi, Vietnam, February 21, 2021. REUTERS/Kham 

A gold shop employee, wearing a protective mask, is dressed as the God of Wealth at a jewellery shop on God of Wealth Day, which falls on the 10th day of Lunar New Year, as Vietnamese hope buying gold would bring good luck, in Hanoi, Vietnam, February 21, 2021. REUTERS/Kham 

A gold shop employee is dressed as the God of Wealth at a jewellery shop on God of Wealth Day, which falls on the 10th day of Lunar New Year, as Vietnamese hope buying gold would bring good luck, in Hanoi, Vietnam, February 21, 2021. REUTERS/Kham TPX IMAGES OF THE DAY 

Tran Duc Phong wears a gas mask to braise black carp in claypots with longan firewood to serve as a traditional Vietnamese dish for Lunar New Year celebrations in Ha Nam province, Vietnam February 5, 2021. Picture taken February 5, 2021. REUTERS/Kham 

Tran Duc Phong wears a gas mask to braise black carp in claypots with longan firewood to serve as a traditional Vietnamese dish for Lunar New Year celebrations in Ha Nam province, Vietnam February 5, 2021. Picture taken February 5, 2021. REUTERS/Kham 

Bui Van Cuong wears a gas mask to braise black carp in claypots with longan firewood to serve as a traditional Vietnamese dish for Lunar New Year celebrations in Ha Nam province, Vietnam February 5, 2021. Picture taken February 5, 2021. REUTERS/Kham 

Bui Van Cuong wears a gas mask as he braises black carp in claypots with longan firewood to serve as a traditional Vietnamese dish for Lunar New Year celebrations in Ha Nam province, Vietnam February 5, 2021. Picture taken February 5, 2021. REUTERS/Kham 

Braised black carp in claypots is cooked with longan firewood to be served as a traditional Vietnamese dish for Lunar New Year celebrations in Ha Nam province, Vietnam February 5, 2021. Picture taken February 5, 2021. REUTERS/Kham 

Braised black carp in claypots is cooked with longan firewood to be served as a traditional Vietnamese dish for Lunar New Year celebrations in Ha Nam province, Vietnam February 5, 2021. Picture taken February 5, 2021. REUTERS/Kham 

Bui Van Cuong wears a gas mask as he braises black carp in claypots with longan firewood to serve as a traditional Vietnamese dish for Lunar New Year celebrations in Ha Nam province, Vietnam February 5, 2021. Picture taken February 5, 2021. REUTERS/Kham TPX IMAGES OF THE DAY 

Bui Van Cuong wears a gas mask as he braises black carp in claypots with longan firewood to serve as a traditional Vietnamese dish for Lunar New Year celebrations in Ha Nam province, Vietnam February 5, 2021. Picture taken February 5, 2021. REUTERS/Kham 

Bui Van Cuong wears a gas mask as he braises black carp in claypots with longan firewood to serve as a traditional Vietnamese dish for Lunar New Year celebrations in Ha Nam province, Vietnam February 5, 2021. Picture taken February 5, 2021. REUTERS/Kham TPX IMAGES OF THE DAY 

A woman burns a replica paper of Kitchen Gods and money on Kitchen God's Day as part of the traditional Vietnamese lunar new year celebrations, the biggest festival of the year, in front of a hairdressing salon in Hanoi, Vietnam February 4, 2021. REUTERS/Kham 

Carps are released to the Red River on Kitchen God's Day as part of the traditional Vietnamese Lunar New Year celebrations, the biggest festival of the year in Hanoi, Vietnam February 4, 2021. REUTERS/Kham 

A man releases carps to Hoan Kiem lake on Kitchen God's Day as part of the traditional Vietnamese Lunar New Year celebrations, the biggest festival of the year in Hanoi, Vietnam February 4, 2021. REUTERS/Kham 

A man releases carps to Hoan Kiem lake on Kitchen God's Day as part of the traditional Vietnamese Lunar New Year celebrations, the biggest festival of the year in Hanoi, Vietnam February 4, 2021. REUTERS/Kham 

A woman prepares to release carps to Hoan Kiem lake on Kitchen God's Day as part of the traditional Vietnamese Lunar New Year celebrations, the biggest festival of the year in Hanoi, Vietnam February 4, 2021. REUTERS/Kham 

A man waits for customers to sell kumquat trees which are decorated at home during the traditional Vietnamese Lunar New Year celebrations, the festival of the year in Hanoi, Vietnam February 4, 2021. REUTERS/Kham 

A woman prepares to release carps to Hoan Kiem lake on Kitchen God's Day as part of the traditional Vietnamese Lunar New Year celebrations, the biggest festival of the year in Hanoi, Vietnam February 4, 2021. REUTERS/Kham 

A woman waits for customers to sell peach blossom flowers will be used as a decoration at home during the traditional Vietnamese Lunar New Year celebrations, the festival of the year in Hanoi, Vietnam February 4, 2021. REUTERS/Kham 

A man releases carps to Hoan Kiem lake on Kitchen God's Day as part of the traditional Vietnamese Lunar New Year celebrations, the biggest festival of the year in Hanoi, Vietnam February 4, 2021. REUTERS/Kham 

Carps are released to the Red River on Kitchen God's Day as part of the traditional Vietnamese Lunar New Year celebrations, the biggest festival of the year in Hanoi, Vietnam February 4, 2021. REUTERS/Kham 

A woman wearing a protective face mask sells decoration items for the traditional Vietnamese Lunar New Year celebrations, the biggest festival of the year in Hanoi, Vietnam February 3, 2021. Picture taken February 3, 2021. REUTERS/Kham 

A man waits for customers to sell kumquat trees which are decorated at home during the traditional Vietnamese Lunar New Year celebrations, the festival of the year in Hanoi, Vietnam February 4, 2021. REUTERS/Kham 

A man releases carps to Hoan Kiem lake on Kitchen God's Day as part of the traditional Vietnamese Lunar New Year celebrations, the biggest festival of the year in Hanoi, Vietnam February 4, 2021. REUTERS/Kham 

A woman wearing a protective face mask sells decoration items for the traditional Vietnamese Lunar New Year celebrations, the biggest festival of the year in Hanoi, Vietnam February 3, 2021. Picture taken February 3, 2021. REUTERS/Kham 

A Vietnamese farmer waits for customers ahead of the Vietnamese "Tet" (Lunar New Year festival) in a peach blossom flower field in Hanoi, Vietnam, January 21, 2020. REUTERS/Kham 

A Vietnamese farmer waits for customers ahead of the Vietnamese "Tet" (Lunar New Year festival) in a peach blossom flowers field in Hanoi, Vietnam, January 21, 2020. REUTERS/Kham 

A Vietnamese farmer waits for customers ahead of the Vietnamese "Tet" (Lunar New Year festival) in a peach blossom flower field in Hanoi, Vietnam, January 21, 2020. REUTERS/Kham 

A woman dries incense in preparation for Tet, the traditional Vietnamese Lunar New Year festival, in Hong Chau village, outside Hanoi, Vietnam February 8, 2018. REUTERS/Kham 

A dog lies next to drying incense in preparation for Tet, the traditional Vietnamese Lunar New Year, in Hong Chau village, outside Hanoi, Vietnam February 8, 2018. REUTERS/Kham 

A resident arranges a pile of banh chung, or rice cakes, ahead of Tet, the traditional Vietnamese Lunar New Year festival, in Tranh Khuc village, outside Hanoi, Vietnam February 8, 2018. REUTERS/Kham 

A woman mixes green bean powder and pork to make banh chung, or rice cakes, for sale ahead of Tet, the traditional Vietnamese Lunar New Year festival, in Tranh Khuc village, outside Hanoi, Vietnam February 8, 2018. REUTERS/Kham 

A man dries incense in preparation for Tet, the traditional Vietnamese Lunar New Year festival, in Hong Chau village, outside Hanoi, Vietnam February 8, 2018. REUTERS/Kham 

A man wraps banh chung, or rice cakes, for sale ahead of Tet, the traditional Vietnamese Lunar New Year festival, in Tranh Khuc village, outside Hanoi, Vietnam February 8, 2018. REUTERS/Kham 

A farmer carries branches of peach blossom flowers for sale ahead of the Vietnamese "Tet" (Lunar New Year festival), in a field in Hanoi, Vietnam February 7, 2018. REUTERS/Kham 

A farmer carries branches of peach blossom flowers for sale ahead of the Vietnamese "Tet" (Lunar New Year festival), in a field in Hanoi, Vietnam February 7, 2018. REUTERS/Kham 

A farmer tends peach blossom flowers for sale ahead of the Vietnamese "Tet" (Lunar New Year festival), in a field in Hanoi, Vietnam February 7, 2018. REUTERS/Kham 

A farmer transports a kumquat tree for sale ahead of the Vietnamese "Tet" (Lunar New Year festival), in a field in Hanoi, Vietnam February 7, 2018. REUTERS/Kham 

A Vietnamese woman, wearing the traditional "ao dai" long dress, poses for a photo along the peach blossom flowers ahead of the Vietnamese "Tet" (Lunar New Year festival), in a field in Hanoi, Vietnam February 7, 2018. REUTERS/Kham 

A farmer waters kumquat trees for sale ahead of the Vietnamese "Tet" (Lunar New Year festival), in a field in Hanoi, Vietnam February 7, 2018. REUTERS/Kham 

A woman prays at a buddhist pagoda during Tet (Vietnamese lunar new year celebrations) in Da Nang city January 28, 2017. REUTERS/Kham 

Pilgrims pray at a buddhist pagoda during Tet (Vietnamese lunar new year celebrations) in Da Nang city January 28, 2017. REUTERS/Kham 

An woman wearing a Vietnamese traditional conical hat while she serves at a cafe during Tet (Vietnamese lunar new year celebrations) in Da Nang city January 28, 2017. REUTERS/Kham 

Tourists visit heritage town of Hoi An during Tet (Vietnamese lunar new year celebrations), January 28, 2017. REUTERS/Kham 

Kim Chi Tran places incense on an unknown grave she believes belongs to her relative killed during the Vietnam War, ahead of the Vietnamese lunar new year (or Tet) when it is tradition to visit the graves of loved ones, at the Viet-Laos national cemetery in Nghe An province, Vietnam January 26, 2017. REUTERS/Kham 

Thai An places incense on the unknown graves of people killed during the Vietnam War, ahead of the Vietnamese lunar new year (or Tet) when it is tradition to visit the graves of loved ones, at the Viet-Laos national cemetery in Nghe An province, January 26, 2017. REUTERS/Kham 

Kim Chi Tran (L), next to her son Thai An, prays with incense near an unknown grave they believe belongs to their relative killed during the Vietnam War, ahead of the Vietnamese lunar new year (or Tet) when it is tradition to visit the graves of loved ones, at the Viet-Laos national cemetery in Nghe An province, January 26, 2017. REUTERS/Kham 

Kim Chi Tran (R), next to her son Thai An, looks for the grave of a relative killed during the Vietnam War, ahead of the Vietnamese lunar new year (or Tet) when it is tradition to visit the graves of loved ones, at the Viet-Laos national cemetery in Nghe An province, Vietnam January 26, 2017. REUTERS/Kham TPX IMAGES OF THE DAY 

Flowers are laid on the unknown grave of someone killed during the Vietnam War, ahead of the Vietnamese lunar new year (or Tet) when it is a tradition to visit the graves of loved ones, at the Viet-Laos national cemetery in Nghe An province, Vietnam January 26, 2017. REUTERS/Kham 

Flowers are laid on the unknown grave of someone killed during the Vietnam War, ahead of the Vietnamese lunar new year (or Tet) when it is a tradition to visit the graves of loved ones, at the Viet-Laos national cemetery in Nghe An province, Vietnam January 26, 2017. REUTERS/Kham 

Kim Chi Tran (R), next to her son Thai An, places incense on an unknown grave they believe is their relative killed during the Vietnam War, ahead of the Vietnamese lunar new year (or Tet) when it is tradition to visit the graves of loved ones, at the Viet-Laos national cemetery in Nghe An Province, Vietnam January 26, 2017. REUTERS/Kham 

A man transports kumquat trees for sale ahead of Vietnamese "Tet" (the lunar new year festival) in a field in Hanoi January 22, 2017. REUTERS/Kham