排列三组三组六什么意思

简介：During the evening self-study in the last class, history teacher Tong Liancheng walked in, stood on the podium, and said impassionedly: Classmates, let me tell you another history about Taizu of the Ming Dynasty! You wanted to listen before, but I was worried that it would take up class time, so I didn’t agree. In the future, I’m worried that no one will listen.