It means that you have come into contact with risky people or regions, or there may be a mistake in big data. There are basically several reasons for the pop-up window of Health Treasure. First, people returning to Beijing need to test nucleic acid again within 72 hours after arriving in Beijing. If there is no nucleic acid test, there will be a pop-up window of Health Treasure. Second, you have been to or passed through a high-risk area, and the travel code was captured by big data, suggesting that you need to do nucleic acid testing. Third, you may be empty with close contacts or sub-close contacts at the same time, suggesting that you need to do nucleic acid testing.