The photo shows lush mountains shrouded in clouds after rain at Jindong Administration Area, Yongzhou City. The administration area boasts a forest coverage rate of 87.74%. Its annual average concentration of negative oxygen ions reaches 20,000 per cubic centimeter. The number of days with a blue sky and air quality up to standard exceeds 350. Jindong Administration Area is one of China's top ten forest farms and is known as the hometown of Nanmu in China. (Photo/Tong Di, Hunan Daily)

The photo shows lush mountains shrouded in clouds after rain at Jindong Administration Area, Yongzhou City. The administration area boasts a forest coverage rate of 87.74%. Its annual average concentration of negative oxygen ions reaches 20,000 per cubic centimeter. The number of days with a blue sky and air quality up to standard exceeds 350. Jindong Administration Area is one of China's top ten forest farms and is known as the hometown of Nanmu in China. (Photo/Tong Di, Hunan Daily)

The photo shows lush mountains shrouded in clouds after rain at Jindong Administration Area, Yongzhou City. The administration area boasts a forest coverage rate of 87.74%. Its annual average concentration of negative oxygen ions reaches 20,000 per cubic centimeter. The number of days with a blue sky and air quality up to standard exceeds 350. Jindong Administration Area is one of China's top ten forest farms and is known as the hometown of Nanmu in China. (Photo/Tong Di, Hunan Daily)