Tourists are seen in Vangvieng, Laos, Jan. 31, 2021. Vangvieng, a tourism town northern to Lao capital Vientiane, witnessed a growing number of domestic tourists as the spread of COVID-19 in Laos has been curbed effectively. (Photo by Kaikeo Saiyasane/Xinhua)

A tourist poses for a selfie in Vangvieng, Laos, Jan. 30, 2021. Vangvieng, a tourism town northern to Lao capital Vientiane, witnessed a growing number of domestic tourists as the spread of COVID-19 in Laos has been curbed effectively. (Photo by Kaikeo Saiyasane/Xinhua)

Tourists enjoy outdoor activities in Vangvieng, Laos, Jan. 31, 2021. Vangvieng, a tourism town northern to Lao capital Vientiane, witnessed a growing number of domestic tourists as the spread of COVID-19 in Laos has been curbed effectively. (Photo by Kaikeo Saiyasane/Xinhua)

Tourists are seen in Vangvieng, Laos, Jan. 31, 2021. Vangvieng, a tourism town northern to Lao capital Vientiane, witnessed a growing number of domestic tourists as the spread of COVID-19 in Laos has been curbed effectively. (Photo by Kaikeo Saiyasane/Xinhua)

Tourists are seen in Vangvieng, Laos, Jan. 31, 2021. Vangvieng, a tourism town northern to Lao capital Vientiane, witnessed a growing number of domestic tourists as the spread of COVID-19 in Laos has been curbed effectively. (Photo by Kaikeo Saiyasane/Xinhua)