" The best Jin in all the land," in particular to Tianjin. In Chinese," Jin" is interpreted as" ferry"," port". " Shuowen Jiezi" said:" Jin, also crossing water." Tianjin since the Ming and Qing dynasties as Beijing waterway throat hub, and King Yongle from here crossing the river successfully fought victory, thus becoming the Emperor Yongle。He said that from here crossing the river is auspicious, A.D. 1404, the given name" Tianjin", meaning " son of heaven 's ferry", thus becoming the best in all the land of ferry, reason has " the best Jin in all the land, " the laudatory name!