I would be surprised if they told people to buy bitcoins and etherium. China is interested in high gold prices from here and "marketing campaign."
I think the government might suggest investing safely. and I think there is nothing strange with China, because we know that gold is a long time investment tool.
China has a lot of business going on their country and that is the reason why we should be surprised if they are going to promote gold and silver so it was normal just like cryptocurrency mining in their country.