Huangshan City is located at 30 degrees north of the equator. It enjoys a subtropical monsoon humid climate. It has clear seasonal divisions in temperature rainfall. The average yearly temperature fluctuates between 15.5 to 16.4 degrees centigrade. the annual rainfall ranges from 139cm to 170cm. The forest coverage amounts to 77.4%.4.25 times more than the national average. All surface water domains and the sources of central drinking water in the city reach the standard required. The acceptance rate of the city’s air is 100%. Especially in the Huangshan Mountains, the amount of the negative oxygen ions in every cubic centimeter count above 20.000 Hence. It is reputed as “a natural oxygen bar”.