The following are the meanings of the two words, namely, supporting the bone and making a statement.
Tuogu refers to an article written in the name of the ancients. Historically, many politicians have written books to express their political ambitions. But their ideas met with great resistance at that time. People believed in the laws made by their ancestors, so they opposed the reform. So, those reformers expounded their ideas in the name of the ancients. In this way, these ideas are easily recognized by contemporary people.
Argument here means to demonstrate and put forward some opinions or opinions.