C4561 Tcm must Change!!
Now, Zhang Xiaofann could see that Liu Zhengguo was really an old scholar.
When he encountered a problem in the field of academics, he had to solve it and give him an answer.
If he could not solve it or give him a satisfactory answer...
Then he would be like a patient with a heart disease. He would keep thinking about this problem and would not stop until he achieved his goal