How to import a model into unity

How can I import the finished models and animations into unity? I tried to export FBX format using blender, but I lost my action in unity.


I think a way over Blender should work!
What can Unity read and what can Blender write?


I like the multi-terminal release of unity, but I consulted the relevant information in the forum. I opened it directly in unity with. blend file, and I could use animation but couldn’t continue editing it. However, after exporting fbx through blender, there was a problem of animation loss. I checked the animation when exporting for many times, but there was no animation information when opening it with unity, and the model was also chaotic when opening fbx file with blender again. Do you have a good solution?