The help Yu Qingzhu's friends can provide isn't just limited to double counting of collateral; the account also has long-term financing options.
These accounts aren't openly Huaxia-owned accounts, but when the fund amount reaches a certain level, the source can't be hidden.
For these potential Huaxia-owned accounts, Sister Hua is willing to provide some convenience in financing, after all, Huaxia citizens are now wealthy big players, and Sister Hua is very much coveting these funds.
Of course, generally speaking, a leverage ratio of one to ten is out of the question, but for long-term financing options, leverage ratios of one to two or one to three are no problem at all, no special approval needed—you just have the authority.
For example, with a one-to-one leverage taking long positions, you'd only get a margin call if the stock price halves, so the risk isn't too big.