Visitors buy food at a booth during the Lancang-Mekong International Food Exposition in Vientiane, Laos, June 12, 2022. The expo is held from June 10 to 19, aiming to promote and showcase food, art and crafts of Lancang-Mekong region's countries. (Photo by Kaikeo Saiyasane/Xinhua)

A woman selects food products during the Lancang-Mekong International Food Exposition in Vientiane, Laos, June 12, 2022. The expo is held from June 10 to 19, aiming to promote and showcase food, art and crafts of Lancang-Mekong region's countries. (Photo by Kaikeo Saiyasane/Xinhua)

A craftswoman makes crafts at a booth during the Lancang-Mekong International Food Exposition in Vientiane, Laos, June 12, 2022. The expo is held from June 10 to 19, aiming to promote and showcase food, art and crafts of Lancang-Mekong region's countries. (Photo by Kaikeo Saiyasane/Xinhua)

People visit the Lancang-Mekong International Food Exposition in Vientiane, Laos, June 12, 2022. The expo is held from June 10 to 19, aiming to promote and showcase food, art and crafts of Lancang-Mekong region's countries. (Photo by Kaikeo Saiyasane/Xinhua)