No wrangling, nothing else, just study this piece, in fact, you don't need any training institutions, you can study by yourself. Nothing in the world is difficult for one who sets his mind to it. However, if you want to get more while considering textual research, or if you want to learn more easily, it is good to report to a training institution. As far as the domestic market is concerned, to be honest, Zhong Bo is quite good. After all, the scale of the enterprise and the "real" recognition degree in the industry are there. ...