$PI Buying and selling Bitcoin in Greater China is illegal. The same applies here; even small amounts that are mapped are not safe to buy or sell and could be illegal. Therefore, the amount available on the market is exactly what exists. It won't be fully mapped out early. Unless you have accounts on other exchanges that match, they will only then map them for you. At least you can buy and operate secretly, knowing how to avoid illegal channels. For example, I have an account on this exchange, so they mapped it for me early on.