If you need to buy certain products, then Taobao 38 event pre-sale is a good choice, you can buy the desired products in advance and enjoy a more favorable price than usual.

If you already have products that need to be returned, then Taobao replacement week is a good opportunity, you can return or exchange the products for free, and there are also benefits such as gifts. In general, which event to choose depends mainly on your current shopping needs. If you need to buy products, the 38 event is more suitable. If you need to return or exchange products, it is more appropriate to choose the replacement week.