The drainage in Tianjin is too poor. Why do you say "the sewer is the conscience of a city"? Sewers. What's the matter with you? Why can't I see it after every heavy rain?
Because domestic cities are developing too fast, it is not the case that water cannot be seen when it rains. Now that buildings have sprung up, underground pipelines have to be demolished and rebuilt. If it is laid according to the standards of underground pipelines in developed countries, the cost is higher. The question now is, when will the city take shape? The skyline is not changed once a year or two, and the underground can start a five-year plan to radiate the conscience of the cobweb city. Uber 50 yuan official offer "uber 100 offer"