On July 21, 2022, the customs officer of Gongbei Customs and the construction unit met the construction needs of the "second line" channel of the Hengqin Cooperation Zone on the spot. 
On November 17, 2023, Hengqin Customs officers inspected the installation of the "second-line" H986 equipment on the spot. 
On February 20, 2024, Hengqin Customs officers tested information facilities, equipment and systems in the "second-line" outbound passenger inspection hall. 
From February 21, 2024, Gongbei Customs will cooperate with the Executive Committee of Hengqin Cooperation Zone to carry out a comprehensive stress test for the whole process. 
From 0:00 on March 1, 2024, the Hengqin Cooperation Zone will be officially closed and operated, and the passenger cars will smoothly exit the area through the "second-line" Hengqin Bridge passage bayonet. 
On the morning of March 1, 2024, at the "second-line" Hengqin Bridge passage passenger car inspection site, the annular intelligent inspection assistance system is assisting the on-site customs officers to inspect the vehicle. 
On the afternoon of March 1, 2024, a truck left the island from the "second-line" Hengqin Tunnel after being inspected by customs officers. 
At 6 p.m. on March 1, 2024, Hengqin Port ushered in a peak of passenger flow, and a large number of passengers cleared customs through the "New Home" convenient channel set up by the Customs. On March 2, 2024, the day after the closure and operation of the Hengqin Cooperation Zone, the customs officers of Gongbei Customs and Hengqin Customs have fully entered the working state, and they are ready to ensure that every entry and exit vehicle and passenger can quickly and smoothly pass through the "second line" channel. In the Hengqin Bridge passage passenger car inspection field, the annular intelligent inspection assistance system is operating efficiently. Through advanced image recognition and data analysis technology, the system can automatically identify vehicle information to assist customs officers to complete the inspection work quickly. At the same time, Hengqin Customs has also introduced a series of other intelligent equipment, such as drones, intelligent inspection robots, etc., to further improve the efficiency and accuracy of inspection. At Hengqin Port, the "New Home" convenient channel has become a new choice for passengers to clear customs. This channel adopts biometric technologies such as face recognition and fingerprint recognition, and passengers only need to register once, so that they do not need to show their documents for multiple customs clearances in the future, which greatly improves the efficiency of customs clearance. At the same time, there are also smart devices such as self-service ticket purchase and self-service check-in in the channel, providing more convenient services for passengers. On the first day of the closure operation, the Hengqin Cooperation Zone showed strong attraction and vitality. A large number of trucks and passengers entered and exited through the "second-line" channel, and the passenger and cargo flow of Hengqin Port hit a record high. With a high sense of responsibility and mission, the customs officers of Gongbei Customs and Hengqin Customs ensured the smooth and safe customs clearance process. With the deepening of the customs closure and operation of the Hengqin Cooperation Zone, it will become an important hub connecting Zhuhai and Macao in the future, injecting new vitality into the economic development of the Guangdong-Hong Kong-Macao Greater Bay Area. Gongbei Customs and Hengqin Customs will continue to work together to continuously improve the efficiency and service level of customs clearance, and make greater contributions to the prosperity and stability of the Guangdong-Hong Kong-Macao Greater Bay Area.