Part Three investigates into the dates of the Yong An Temple Murals by studying their patrons and patterns , reaching the conclusion that the Yong An Temple Murals were painted during the reign of Qianlong in the Qing Dynasty.

This paper,using the mathematical method,gives a systematical research to an appropriate proportion of the economic increase with the population supported by finance in westen region in china,and puts the new theory to scientifically control the government organization and the administrative personnel with the mathematical model and in accordance to the static and dynamic experimental coefficiets.