The triangular figure is like screw of the steamer, signify shanghai is a city that is advancing constantly ;

三角图形似轮船的螺旋桨，象征著上海是一座不断前进的城市；

youdao

The triangular figure is like screw of the steamer, signify shanghai is a city that is advancing constantly ;

三角图形似轮船的螺旋桨，象征著上海是一座不断前进的城市；

youdao