Only by learning advanced mathematics well can we understand and calculate engineering mechanics more deeply and carry out mechanical analysis and calculation. I didn't know why I designed it like this. Only in this way can we understand why the design code stipulates. Only in this way can mistakes in design be found quickly and accidents can be avoided. The more you learn, the less courageous you are, and the more confident you are in design and construction. Only in this way can mistakes be found in advance, thus preventing the occurrence of major accidents.