A tourist tries high-altitude entertainment at Canton Tower in Guangzhou, capital of south China's Guangdong Province, Feb. 3, 2021. The high-altitude entertainment project at Canton Tower attract many tourists for self-challenging and city sightseeing. (Photos: Xinhua)

Tourists try high-altitude entertainment at Canton Tower in Guangzhou, capital of south China's Guangdong Province, Feb. 3, 2021. The high-altitude entertainment project at Canton Tower attract many tourists for self-challenging and city sightseeing.

Tourists try high-altitude entertainment at Canton Tower in Guangzhou, capital of south China's Guangdong Province, Feb. 3, 2021. The high-altitude entertainment project at Canton Tower attract many tourists for self-challenging and city sightseeing.

A tourist tries high-altitude entertainment at Canton Tower in Guangzhou, capital of south China's Guangdong Province, Feb. 3, 2021. The high-altitude entertainment project at Canton Tower attract many tourists for self-challenging and city sightseeing.

Tourists try high-altitude entertainment at Canton Tower in Guangzhou, capital of south China's Guangdong Province, Feb. 3, 2021. The high-altitude entertainment project at Canton Tower attract many tourists for self-challenging and city sightseeing.

A tourist (L) cries tears of joy after trying high-altitude entertainment at Canton Tower in Guangzhou, capital of south China's Guangdong Province, Feb. 3, 2021. The high-altitude entertainment project at Canton Tower attract many tourists for self-challenging and city sightseeing.

A tourist tries high-altitude entertainment at Canton Tower in Guangzhou, capital of south China's Guangdong Province, Feb. 3, 2021. The high-altitude entertainment project at Canton Tower attract many tourists for self-challenging and city sightseeing.