In case of refund, the discount (deduction) will be deducted first. Actual refund amount = applied refund amount-preferential (reduced) amount. Example 1. If you purchase goods with an order amount of 20 yuan and partially refund 5 yuan, first deduct the preferential reduction 10 yuan, then the actual refund amount received is 0 yuan, indicating that it participated in the preferential reduction. Example 2. If you purchase goods with an order amount of 20 yuan, you will get a partial refund from 10 yuan. After deducting the preferential reduction from 10 yuan, the actual refund amount will be 0 yuan, and you can still participate in the preferential reduction after the refund is successful. Example 3. If you purchase goods with the order amount of 20 yuan, you will get a partial refund 15 yuan, and the preferential reduction 10 yuan will be deducted first. Then the actual refund amount received is 5 yuan, and you can still participate in the preferential reduction after the refund is successful. Customer service 2 17 will answer your questions. Broadband on demand, fast thinking. The official account of China Telecom's Guizhou customer service WeChat can directly handle the keyword "Broadband on demand", which is convenient and fast.