Yao Shaosi nodded. "Yes, in the northern mining area, there are not only stone mines, but also copper mines. Since it is set up by Duhufu in the northwest, can you find stone mines but not copper mines? If you dig a copper mine, can you not hand it over to the court? "
"Even so, it is not enough …" Chen Jiugong took the message that "a little is enough" "Noble really unite as one? Are all nobles really hoarding raw copper? Will everyone continue to hoard goods without being tempted? " "Be firm and uncompromising. When the copper mine is transported back…