Alibaba's after-sales success does not necessarily mean a refund. After-sales success can include refunds, exchanges, repairs and other methods. It depends on the negotiation and agreement between the buyer and the seller. If the buyer asks for a refund and the seller agrees and completes the refund, then the after-sales success is a refund. But if the buyer asks for an exchange or repair and the seller agrees and completes the corresponding operation, then the after-sales success is an exchange or repair. In short, the purpose of Alibaba's after-sales success is to meet the needs of buyers and safeguard the rights and interests of both parties.