湖北省刘军强问：某甲在城市建有私房一幢，在1986年作价1．6万元卖给某乙，双方立有契约，某己支付了全部价款。但双方至今未到房管部门办理产权过户手耸。现某申以未办过户手续、当时卖价过低为由，美求收回房屋，退还某已支付的房款，并愿承担某乙房款的利息损失。但事已过? Liu Junqiang, in Hubei Province, asks: A building in the city has a private house, sold for 16,000 yuan at a price of 16,000 yuan in 1986, and the two sides established a contract. They have already paid the full price. However, the two parties have not yet reached the hands of the property management department for the ownership transfer. A certain application has not been done before the transfer procedures, when the selling price is too low, the United States sought to recover the housing, refund of a payment has been made, and is willing to bear the interest of a B room loss. But things have passed?