I spent fourteen years teaching and met with Liang Rengong, presenting him "e;Important Books to Solve Problems"e;. In "e;Analects of Confucius"e; and "e;Mencius"e;, there were meaning similarities and differences, compiling as a separate article. Rengong also agreed with this.For six years in Shanghai, I completed Doctrine of the Mean Problem Solving. This autumn, I suffered from sickness and could not work, staying at home for rest; I learned from the call to read the University book, deduce its meaning, articles written, and then the Call Book is for standby.