Introduction to Qianqing Pass: Qianqing Pass, Qianqiu Pass and Yuling Pass are collectively known as the Three Passes in Northern Zhejiang. They were important passes to defend Lin'an, the capital of the Wuyue Kingdom. Qianqingguan is composed of two huge and smooth granite blocks, blocking the eyes like a door. This natural stone gate is nearly 4 meters high, about 3 meters thick, and wide enough for two people to walk side by side. Its situation is "one man can pass the pass, and ten thousand people can pass it." Fu Mo Kai".