TOPOGRAPHY
The eastern plains and southern coasts of the country consists of fertile lowlands and foothills, and is the location of most of China's agricultural output and human population. Macau lies in the southern coastal region. The southern areas of the country (South of the Yangtze River) consists of hilly and mountainous terrain. The west and north of the country is dominated by sunken basins (such as the Gobi and the Taklamakan), rolling plateaus, and towering massifs.
COMFORT ZONE
 According to the Design Code for Residential Buildings GB50096-1999 ,  the comfort zone temperature S is defined in the range of 16 to 29°C for summer and winter periods.\cite{Sun_2013}