Originated Wenyuhe Guandi Hill , Taniguchi immigration flow from north to south flow of Fenyang gate open .
文峪河发源于关帝山，由北谷口入境流至开栅向南流入汾阳。
The larger the city is , the greater proportion of immigration traffic flow .
城市越大，以出入境为目的的车流所占的比重也越大。
immigration flow