An Innovation Research on Retrieving Chinese & Korean, Singapore GDP Changes & China Cities GDP per capita Changes through Sustainability
Run Xu1, Changfu Jin2, Xiangilan Piao2, Wanhao Wu3, Jiaguang Liu3,Jing Yu3, Tianyi Yan4, Zhongchun Cao1, Hongliang Zhang5, Minheng Jin2, Gonghai Yu6, Qinghua Xu6, Yanjie Mu6;