Tianyuliang is a national registered trademark. The authentic products are not less than 1,200 yuan, while the fake products are several hundred yuan! Tianyuliang never sells online, only specialty stores sell it. Except for specialty stores, everything else is fake. If you buy fake goods, you can complain directly to the industrial and commercial department. Tianyuliang Muyu Stone and Changqing Muyu Stone Association will issue fake certificates. . Relevant specialty stores can be found on Tianyuliang’s official website. Best wishes for your recovery!