If that's real and he's able to extract it, it will affect the price of gold negatively by greatly increasing supply.
The Chinese also recently claimed discovery of a mega gold deposit, so the timing seems suspect. In El Salvador's instance, the metal combinations also seem off. Gold is most generally associated with copper and/or silver mineralization - they all being in the same group in the periodic table. Weird ore combinations aren't unheard of, but definitely are less common.
All the Chinese gold headlines I've seen looked like click bait - this one (foxnews.com) included. I'd assume their "news" is more akin to propaganda in order to manipulate commodity prices.
It could be a big kike trick to deliberately drop the price of gold, so they can buy up the existing stores, then "discover" that the news is fake, sending the price of gold back up once they are holding it.
Ease of extraction is the key variable. If it was easy, somebody would already be doing it. They won't be dumping $3T in gold onto the open market in our lifetime.
Do you think anything can happen in the world without it being in the jews' favor?