On the afternoon of July 27th, the signing ceremony of "Play a good move, build a metropolitan area together and accelerate the development of Chengdemei Urbanization" was held. There are a total of 8 agreements signed this time, 4 of which involve important rail transit construction. The four cities have also formed a number of deepening cooperation agreements in the areas of joint headquarters, platform sharing, innovative industry collaboration, and regional pairing, which will be signed in the next step.