Tidal bore is originally a natural phenomenon, but tidal bores like the Qiantang River only occur in the estuaries of a few countries in the world, such as the Severn River in the UK, the Seine River in France, the Amazon River in South America, the Colorado River in North America, and the Hugh River in India. However, due to the wide estuaries and deep riverbeds, the tidal bores there are far less typical and spectacular than the Qiantang River in my country.

The Amazon River in South America, the Ganges River in South Asia and the Qiantang River Haining Tide are collectively known as the world's three most powerful tidal bores. However, the beauty and grandeur of the tidal bore are particularly unique in China, the Haining Tide. The Qiantang River tidal bore is due to the special trumpet-shaped terrain of Hangzhou Bay, which is wide in the east and narrow in the west. The tidal bore is faster and higher as it goes west, and the tidal height is changeable and unparalleled in the world.