You seem to have made a mistake. Crude oil has no futures in China, only spot, not just crude oil. All spot investment in China is illegal (note that it is illegal, not that it is illegal, and there is no legal regulation on spot in China, only the CSRC is supervising it). Their trading data can be faked, your margin disappears at some point, tricking you into doing more, and then they control the disk to suddenly dive, making you lose everything. You got it?