This extension program runs on WeChat is designed for foreigners and Chinese oversea who planning to travel to China in the global pandemic. By recording the temperature for more than 14days ahead of schedule until the flight. Every user has a specific QR code that links to their historical temperature records so that when boarding and entering the country, the code would be scanned by officials to evaluate the health condition of immigrants. As a smart management tool, this app is very efficient for health care and administrative professionals to carry out work and keeping track of the health conditions of visitors to mitigate the impact of the outbreak.