Children exercise under the instruction of their coach at the Independence Square of Colombo, Sri Lanka, Jan. 10, 2021. (Xinhua/Tang Lu)

A woman exercises at the Independence Square of Colombo, Sri Lanka, Jan. 10, 2021. (Xinhua/Tang Lu)

Children exercise under the instruction of their coach at the Independence Square of Colombo, Sri Lanka, Jan. 10, 2021. (Xinhua/Tang Lu)

A man exercises at the Independence Square of Colombo, Sri Lanka, Jan. 10, 2021. (Xinhua/Tang Lu)