Introduction to Shengyanjing: Shengyanjing is another wonder of Baishi Mountain. It is located in the northwest of Qingyun Peak. It is surrounded by cliffs on three sides and is about hundreds of meters deep. Here in summer and autumn, there will be smoke-like mist curling up from the deep valley, as light as catkins and as white as snow. This is where the name "Smoke Well" comes from.