To enable communications among VPCs across regions, you need to create a cloud connection and load the VPCs to be interconnected to the cloud connection. If target VPCs are under different accounts, ask the peer accounts to authenticate the VPCs before loading the VPCs. After this, purchase a bandwidth package and configure bandwidths between regions that need to communicate with each other. If VPCs outside the Chinese mainland need to communicate with those within the Chinese mainland, submit cross-border applications before purchasing bandwidth packages to ensure data security. Figure 1 illustrates how to realize communication among VPCs in different regions.