Why can't the novice mobile phone number Beijing Health Bao find the track?

The valid data of the user's last 14 days is insufficient. Tip: If the verification of 14-day travel trajectory fails, you can click the query in the tip at the bottom of the page to confirm. There is not enough valid data for users to stop talking in the past 14 days, so users need to record the earliest and latest talking data in a city in the past 14 days, so as to display the itinerary. If it is confirmed by inquiry that you have not entered (returned to) Beijing within 14 days.