Can I refund the group purchase of Meituan.com Hotel?

Meituan. There are two kinds of hotel group buying, one is to buy first and then make an appointment. If the coupon number is not verified, this group purchase can be returned at any time. The other is online booking, and you can return it, but it will be more troublesome to return it. The customer service will check with the merchants and guests why the refund is made, and at the same time obtain the consent of the merchants.