Flash delivery, Dada Express. According to the information on the official website of Wenzhou City, Dada Express is China's leading local instant delivery platform, serving more than 1.4 million merchant users and tens of millions of individual users, covering more than 2,400 counties and districts across the country. Flash Delivery is one of the leading instant delivery platforms in the same city. The one-to-one service model of the Yiyi express delivery platform makes it clear that the express courier will only serve one customer at a time from pickup to delivery.