Hello, for Dangdang's self-operated store, the delivery method is ordinary express and surface mail; The purchase amount of a single order reaches the postage limit and can be mailed; 5 yuan or RMB 10 yuan will be charged for each unsuccessful order. Please refer to /topic/744/ 14252.shtml for the specific postage standard of Dangdang. The merchant's single product page will have freight instructions. Please check it. At the same time, Dangdang offers a variety of payment methods. If cash on delivery is needed, all 800 cities in Dangdang have opened cash on delivery service. Please refer to (/helpcenter/API _ CMS/helpcenter/question _ sort/2241179421.shtml for the scope of online cash on delivery. If it is not within this scope, you need to choose other payment methods. At the same time, if you buy a product from a merchant, as only some merchants have opened cash on delivery at present, you can confirm the specific information provided on the single product page or try to submit the order confirmation. Thank you!