Hehe, I'm a local university major, right upstairs. But now I feel that jewelry stores are more knowledgeable. The so-called tree enjoys the cool. I suggest Wu Ruihua or He, the former is a senior and the latter is the dean. Of course, other teachers are also very good. Bai Feng has rich practical experience. Vice President Yamy and his own jewelry company can learn to do business. Ren Jin is a jewelry designer, but he is very capable. In the jewelry circle.