Why are there two worlds behind Mud Mountain?

The reason why crossing Mud Mountain is a different world is because Mud Mountain is the watershed between Dadu River and Qingyi River and the natural barrier from Chengdu Plain to Xichang Valley. Mud mountain blocks the water vapor brought by the eastern monsoon, and breeds Ya 'an, a rainy city in the east of Lingdong, and Qingxi, a windy city in the west of Lingxi, so crossing the mud mountain is a different world.

The main peak of Mud Mountain is 3300m high, and the National Highway 108 passes through it. Although the mountain is not high, the road is difficult to take risks. Nishankou is 2552 meters above sea level, which is the only way to cross Daxiangling, a famous climate watershed. The best landscape of Mudan Mountain is the section from Qincaiping to Yezhuping in Mudan Mountain at the junction of Yingjing and Hanyuan. Plantation and natural forest blend together, the forest coverage rate is over 95%, the altitude is 1500-3000m, the annual average temperature is 10℃, and the ice and snow period lasts for 4 months from June to the end of February. This is a typical subtropical monsoon climate with four distinct seasons: Chun Lv, cool in summer, cool in autumn and snow in winter.