Tourists watch the 2020 Phuket Surfing Contest at Kalim Beach in Phuket, Thailand, Sept. 13, 2020. The three-day contest was part of the Thai government's campaign to promote tourism and stimulate the economy. (Xinhua/Zhang Keren)

In this aerial photo, a contestant surfs during the 2020 Phuket Surfing Contest at Kalim Beach in Phuket, Thailand, Sept. 14, 2020. The three-day contest was part of the Thai government's campaign to promote tourism and stimulate the economy. (Xinhua/Zhang Keren)

In this aerial photo, a contestant surfs during the 2020 Phuket Surfing Contest at Kalim Beach in Phuket, Thailand, Sept. 13, 2020. The three-day contest was part of the Thai government's campaign to promote tourism and stimulate the economy. (Xinhua/Zhang Keren)

In this aerial photo, a contestant swims to the contest area during the 2020 Phuket Surfing Contest at Kalim Beach in Phuket, Thailand, Sept. 13, 2020. The three-day contest was part of the Thai government's campaign to promote tourism and stimulate the economy. (Xinhua/Zhang Keren)

In this aerial photo, a contestant surfs during the 2020 Phuket Surfing Contest at Kalim Beach in Phuket, Thailand, Sept. 13, 2020. The three-day contest was part of the Thai government's campaign to promote tourism and stimulate the economy. (Xinhua/Zhang Keren)

Children prepare surfboards for the 2020 Phuket Surfing Contest at Kalim Beach in Phuket, Thailand, Sept. 13, 2020. The three-day contest was part of the Thai government's campaign to promote tourism and stimulate the economy. (Xinhua/Zhang Keren)

In this aerial photo, a contestant surfs during the 2020 Phuket Surfing Contest at Kalim Beach in Phuket, Thailand, Sept. 14, 2020. The three-day contest was part of the Thai government's campaign to promote tourism and stimulate the economy. (Xinhua/Zhang Keren)

Contestants wait for their turns during the 2020 Phuket Surfing Contest at Kalim Beach in Phuket, Thailand, Sept. 13, 2020. The three-day contest was part of the Thai government's campaign to promote tourism and stimulate the economy. (Xinhua/Zhang Keren)