The expansion of Meituan's take-away coupons is a preferential activity launched by Meituan. After receiving the universal coupon, users can use the coupon to spend on the Meituan takeaway platform. After the expansion of the universal coupon, users can't return the coupon, because the coupon has expired or been used, so the universal coupon for take-out of Meituan can't be returned after the expansion.