Renewed calls have been raised to allow Hong Kong’s young families to use part of their mandatory pension savings to buy homes, with a recent survey finding that high flat prices and large down payments have dampened their desire to own homes.The study released on Sunday also called for the government to offer housing loans to first-time buyers and to halve the down payment required for middle-income home hunters to buy government-subsidised sale flats.Two policy think tanks, New Youth Forum...