You can't use provident fund loans to buy a house for others. For provident fund loans, only the house purchased by the loan can be used as loan collateral, and other real estate cannot be used as loan collateral, that is to say, only the real estate in my name can be used as loan collateral for provident fund loans.

legal ground

"Regulations on the Management of Housing Provident Fund" Article 5 The housing provident fund shall be used for the purchase, construction, renovation and overhaul of owner-occupied housing by employees, and no unit or individual may use it for other purposes.