C451

Yuan Kelee did not say a word, waiting for his son to speak.

Yuan Shu also hesitated in his heart. Looking at his father's sparse short white beard, he felt troubled. Yuan Kelee's expression was calm, he did not give Yuan Shu any hint.

Therefore, Yuan Shu slowly said: "Duke Number One Scholar's method is good, but it is flawed. As far as I know, silver is easier to mine than gold