This is not a good hanjie.
When I tried to solve it, as test, I needed to use the temporary ones for eternity (I am a bad solver and a worse creator) and, in addition, I could verify that there were several final solutions.
I made some modifications, but if I continued, the drawing became very distorted.
I have decided, instead of destroying it, for those who do not want to waste too much time, include a hint in the comments. It does not make it easy, but I think that with it multiple solutions are avoided and the use of temporary ones is greatly reduced.