领取%E6%9D%8E%E5%AE%81%E8%B6%85%E8%BD%BB21%E8%B7%91%E6%AD%A5%E9%9E%8B%E7%A2%B3%E6%9D%BF%E8%B7%91%E9%9E%8B%E7%AB%9E%E9%80%9F%E5%87%8F%E9%9C%87优惠券时，请详细阅读优惠券的使用规则。