Why is there a Home Inn mini program on the WeChat interface?

If you have stayed at a Home Inn, the mini program will show that your booking is delayed. Sometimes I accidentally click on a certain page. This page is a small program and will appear in WeChat later. You can delete him on WeChat. You can delete it if you don't want to use it. Mini programs can be understood as subprograms in the APP program. Mini programs develop the required functions under the specifications allowed by the main program.