I am not involved in the whole project. Now that there is a problem, I need to investigate the use of proj4 and proj4leaflet in VUE. In native JS, there is no problem. In VUE, you can"t access Baidu Maps with leaflet,. After a rough look at it, the result is that proj4 and proj4leaflet don"t work, and then you can"t access Baidu Maps. Now you want to find a way to use these two plug-ins in VUE, and if you can"t use them at all, you may have to do something else.