Yanu Lake, Wawushan, Hongya County, Sichuan, is a very beautiful place. It is particularly cool in summer. Many people who want to stay here for a long time are booked about a year in advance. It is about 1100 meters above sea level, there is no PM2.5, the concentration of negative oxygen ions is more than 30,000, the air quality is excellent, the forest coverage rate is particularly high, the ecological environment is very beautiful, attracting many tourists to go.