The Qiantang River is renowned as one of the world’s most spectacular natural destinations for tidal bore watching. Its mighty tidal surge—driven by celestial gravitation, Earth’s centrifugal force, and the unique funnel shape of Hangzhou Bay—is hailed as the largest tidal bore in the world.

Several times a year, the river experiences exceptionally high tides. The most famous occurs around the 18th day of the seventh lunar month. Known as the “Ghost King Tide” due to its timing near the Ghost Festival, it draws crowds of spectators eager to witness its overwhelming force.

At popular viewpoints like Meinv Dam, the approaching tide appears as a distant white line racing across the water. On the dam, the roar of the surge and the powerful winds create a thrilling sensory experience. When the tide crashes into the structure and swirls back, it forms a dramatic “returning tide,” giving onlookers the illusion of standing amid crashing ocean waves.