What changes have taken place in Beijing version 3.0 of "Health Treasure"?

Recently, the Beijing "Health Treasure" applet has been updated with version 3.0. What new functions have been added to Beijing "Health Bao" 3.0? How to use the message notification function? How to use the interactive message function of Beijing Health Bao? How to use the visitor information registration function? How to use my information scanning code registration function? What information can I find in the personal center? What should I do if I am not satisfied with the head photo on the health status display page of Beijing "Health Treasure"? Can I take a new photo? /kloc-how do teenagers under 0/6 use Beijing "health treasure" to check their health status? How to use the "My Nucleic Acid Detection Query" function? Let's take a look at the solution together.