Upon some simple fact checking, very few sources have reported on this subject. This linked article is the main one that comes up, however, there are some other articles stating the same thing from websites like ScienceAlert and Live Science. All the other sources that come up regarding gold deposit found in China is dated or only somewhat related to the sheer amount of gold that was found. However, this lack of sources doesn't necessarily make this claim false. I think that this news just isn't as popular, and reporters/news companies have been focusing their efforts on other stories. For the time being, there are a few articles regarding this subject but they all state the same information including how much the gold is worth, when it was found, and how. If information comes out proving that this claim was false, I wouldn't be surprised, so for now I think it's best to stay updated on this subject and hopefully more sources will report on it.