Jiangyin is located in the middle of the Yangtze River delta where the economy is the most active nationwide with the Yangtze River to its north and Taihu Lake to its south. It is the first city resting on the bank of the Yangtze River upstream from Shanghai. The climate of Jiangyin belongs to monsoon climate in subtropical zone which is mild with plenty of rain, clear four seasons, enough sunshine, long time of no frost etc. The prevailing wind year round is southeast with an average speed of 20m/s. The annual average temperature is 15.2℃. The lowest temperature is –3℃ while the highest is 38℃. The annual average rainfall is 1025.6mm. The annual average atmospheric pressure is 1016mp. The annual average relative humidity is 67%.