You can't return it without a receipt. This is the rule of every shopping mall. Moore Parkson is managed by Parkson. All rented counters are paid at the cashier's desk, and a small ticket is required for refund. However, specific counters are usually interchangeable. As long as the things you buy are not washed and the trademarks are not cut, there is no big problem. However, the same brand can only be exchanged for the same brand of goods, and those that cannot be bought on the fourth floor cannot be exchanged on the third floor. Because you didn't specify which brand it is, you can call the front desk of Parkson for consultation.