Can Jiaxing send express delivery to Haining in the same city?

You can't. According to the Baidu map, Jiaxing is located in the northeast of Zhejiang Province, in the hinterland of Hangjiahu Plain in the Yangtze River Delta, and Haining is located in Hangjiahu Plain in the Yangtze River Delta. Express delivery can be sent in the same city, limited to the same city, and cannot be sent beyond the limit. Express delivery in the same city is to provide all customers with all-round and all-scene delivery in the same city, and provide fast delivery service within the urban area.