I suggest moving nbt daily between the two accounts. The withdrawal fee is 0.1 nbt (forget about bter securities or whatever, it’s a suckers game). If you think btc will be volatile or drop in price, move nbt to the cny account. If you think btc will be stable or go up, move to the btc account.
Or don’t micromanage and put some in both and see which is more profitable long term.