一个港口的成长性究竟何在?投资天津港究竟能获得多大的收益?这是股东们最关心的问题,也是于汝民面临的最大考验。天津港要在如此巨大的基数上再发展,哪里才是方向? What exactly is the growth of a port? How much profit can we gain from investing in Tianjin Port? This is the issue that shareholders are most concerned about, and it is also the ultimate test for Ru-Min. Tianjin Port in such a huge base on the development, where is the direction?