The Dongshan Grassland is located on the east side of Tengchong, with a grassland area of about 20000 acres and a highest altitude of 2373 meters. The annual average temperature is 14.9 ℃, and the average content of negative oxygen ions is 3827 per cubic centimeter, with a maximum of more than 38000. It is known as the "natural oxygen bar". Relying on excellent climate conditions, all things stretch and grow, making Tengchong the earliest place to welcome sunlight. The vast and boundless grassland is known as the "heavenly grassland"; In addition, the naturally formed plateau lake is known as the "Shangri La of Tengchong" and the "Little Xizang of Tengchong" due to its elevation of about 2350 meters. In the early morning, the mist is hazy and the wind blows, filling the mountains. The first ray of sunlight rushes out of the clouds, and the small dewdrops on the grassland are crystal clear. Looking down at the "First City on the Extreme Edge" from the "Grassland in the Sky", it is as beautiful as a huge painting