China Tracks Foreigners' Lives From Ski Trips to Gas Bills

A Chinese city called Zhangjiakou has a secret computer system that watches foreigners who live there.

The system collects information from cameras, hospitals, gas stations, and even flight tickets.

It keeps a list of more than 700 people, including reporters, students, and people from places like Hong Kong and Taiwan.

The system was linked to a company called Origin Dynamic that makes police gadgets.

The database was easy to access and had weak security, so anyone could see it.

It disappeared from the internet in May 2023, but it shows how far Chinese surveillance goes.

The system even grouped people from certain countries into special categories.

The discovery was made by a journalist named Marc Hofer.

The whole thing is an example of how governments can use technology to track people.