What is it that the SMS shows that this order is not refundable after the WeChat reservation is cancelled?

12306 This order is non-refundable, which means that your order is redeemed with points and cannot be refunded.

12306 points are non-refundable, but can be changed. The range of change is still tickets that allow points to be exchanged, and there are corresponding points. When the new ticket price is higher than the original ticket price, the difference needs to be paid by points. When the new ticket fare is lower than the original ticket fare, the difference will not be refunded. A handling fee of 1000 points will be charged when handling.