It should be noted that within 14 days after the mobile phone number is untied, if there is any trip to (back to) Beijing, it is still necessary to declare and verify the itinerary of the mobile phone number. (Unbound mobile phone number 14 days will be displayed in the personal center in gray style, and it will be deleted after 14 days). Therefore, in order not to affect the normal use of Beijing "Health Treasure", please be sure to change your mobile phone number more than 14 days in advance.