If you saw this wave coming toward you, what would your first reaction be?
Run, scream, or duck behind a wall?
These astonishing photos show brave tourists and locals taking pictures of tidal waves under the influence of Typhoon Usagi in Hangzhou, in China's Zhejiang province.
According to Chinese state news agency Xinhua, China's National Meteorological Center issued its highest alert, warning that Usagi would bring gales and downpours to southern coastal areas.
At least 25 people have died in Guangdong province of south China, which was hit by 110mph winds. The storm has affected 3.5 million people on the Chinese mainland, state media reported.
Hundreds of flights have been cancelled to the affected areas, and to Hong Kong, which has not been as badly affected.