C799 Strengthening Jade

Although Xu Dong felt a little uncomfortable when he saw his brother Xu Nan leave, he still chose to stay in order to learn the technique that could improve mining efficiency by tenfold from Qiu Yun. He would continue to beg Qiu Yun and ask him to teach him how to mine.

"Master Qiu Yun, teach me the technique of mining. "

Xu Dong's voice sounded like he was begging