Bǎizhàng jì, three-tiered waterfall in Wencheng County, Zhejiang, China

Bǎizhàng jì is a waterfall in Wencheng County that splits into multiple cascading sections as it drops down mountainous terrain. The water flows over distinct rock tiers, creating a dramatic vertical structure that rises approximately 365 meters.

The waterfall's name comes from the total drop of its three tiers, which equals 100 chi (a traditional Chinese unit) plus 2 metres. In 2004 the waterfall and its surrounding scenic area were designated a national key scenic area, and the site now holds national 4A scenic-area status. A reservoir was built a few hundred metres upstream to regulate the water flow.

The name comes from the three tiers together measuring 100 zhang plus 2 metres in the traditional luban ruler, hence "hundred zhang." A local saying sums up the three falls: "one fall a hundred zhang high, the second a hundred zhang deep, the third a hundred zhang wide." The second tier's rock gallery, 2.7 m high, 8 m deep and over 50 m long, lets walkers pass behind the falling water.

The three tiers lie in a V-shaped ravine with a 1,200 m stream course, so allow time to walk between the head fall, the 85 m second drop and the 12 m third drop. The rock corridor behind the second fall is 2.7 m high, 8 m deep and over 50 m long. A reservoir about 620 m above sea level, now called Tianding Lake, sits a few hundred metres upstream.

The name comes from the total drop of the three tiers, which equals 100 chi (a traditional Chinese unit) plus 2 metres when converted to the carpenter's rule. A rock gallery 2.7 metres high, 8 metres deep and over 50 metres long cuts behind the middle tier, letting walkers pass between the upper and lower folds of the 85-metre fall.