The Xingcheng trip code shows Huludao. Huludao is a prefecture-level city, Xingcheng City is a county-level city, Xingcheng is a county city of Huludao City, Liaoning Province, subordinate to Huludao City, Liaoning Province, located in the southwest of Liaoning Province, on the west coast of Liaodong Bay, residing in the central part of Liao Xi Corridor. The city of Xingcheng is very close to the city of Huludao, half an hour away, and Xingcheng shares a border with Huludao.

The role of the trip code

The trip code is launched by the China Academy of Information and Communication Technology (AICT) in conjunction with the three major carriers, utilizing the data received by China Telecom, China Mobile, and China Unicom using their cell phones, obtained through the location of the base station where the user's cell phone is located, and providing free querying services for the nation's 1.6 billion cell phone users.

Supporting a key query within 14 days to all the cities and cities information, through the base station to analyze the location of the phone and the movement of the trajectory, to assist in proving the personal journey track tool, can analyze and determine whether the user of the cell phone number to pass through the high-risk areas.