Inaccurate longitude and latitude position,Specific to a building

Tiananmen Square, Beijing, China

The green box is the actual position, and the red box is the position in cesium

Hello @Iza, welcome to the community.

I took a look into this and was able to confirm the inaccuracy. Unfortunately, this is likely not something that can be solved in the plugin. I suspect this misalignment is caused by the geographic coordinate system used in China. Restrictions on geographic data in China - Wikipedia
You can see the same problem in Google Maps or Bing Maps when switching between map view and satellite view - the imagery is not aligned with the expected coordinates.

I recommend that you manually reposition the object, if possible. It will probably be difficult to reliably convert the coordinates to the position that you need through code or other automated methods.