I use this sifu. [He produces a tiny ball of jade, like a marble]. Here is my teacher; it is the best possible quality jade, transparent like glass. This is the jade standard I use when I buy. It's like a benchmark.
Copyright 1994-. All rights reserved. The content
(including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form.