To promote the integrated development of the Shenzhen Special Economic Zone and in light of the new mission and new tasks, the State Council recently agreed to revoke the management line of the Shenzhen Special Economic Zone. After the withdrawal of the Shenzhen Special Economic Zone management line, it is necessary to further strengthen the frontline control over the border between Guangdong and Hong Kong, as well as to improve the infrastructure construction in order to ensure the sustained stability of the border between Guangdong and Hong Kong. The Special Economic Zone management line is the historical testimony of the construction of Shenzhen Special Economic Zone. Although the "second-line clearance" has virtually no effect at all, its withdrawal is of landmark significance.