Qiantang River is the largest river in Zhejiang Province, which flows into Hangzhou Bay from west to east and into the East China Sea. The tidal bore in Qianjiang River is a natural wonder in the world, which is caused by the centrifugal effect of celestial gravity and the earth's rotation, as well as the special terrain of the bell mouth of Hangzhou Bay.
Every year on the 15th day of the eighth lunar month, the tidal bore in Qianjiang River is the largest, and the tidal head can reach several meters. When the tide came, the sound was like thunder, and the avalanche was spectacular. Tide-watching began in the Han and Wei Dynasties (1 6th century) and flourished in the Tang and Song Dynasties (7th century to13rd century). After more than two thousand years, it has become a local custom.
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In ancient Hangzhou, the Phoenix Mountain and Jianggan area were the best places to watch the tide. Due to the change of geographical location, Yan Guan in Haining has been the first scenic spot to watch the tide since the Ming Dynasty, so it is also called "Watching the Tide in Haining". "Qianjiang Tao Qiu" is famous at home and abroad, and it was popular as early as the Tang and Song Dynasties. On the day of tide-watching, especially on August 18 of the lunar calendar, the traffic on the road is like water and the crowds are like tides.
Overlooking the bell mouth of Qiantang River at sea, the tide forms turbulent waves, just as Malik is rushing. When the sandbar of the riverbed near Ganpu is blocked, the tidal wave rises by three to five meters, and the tidal range is as high as nine to ten meters. There is indeed a trend of "the sky is full of turbid waves and the rivers and mountains are destroyed". Different places can enjoy different tidal scenes: the tower sees the "first-line tide", the babao sees the "confluence tide" and the old salt warehouse can enjoy the "resurgence".
Qianjiang Guanchao is located in Yan Guan Town, Haining, 45km northeast of Hangzhou. There are only two such magnificent landscapes in the world, one is the Amazon River in South America and Brazil, and the other is the Qiantang River. Dumped by tide watchers at all times and all over the world, it is called "the wonder of the world".