I really don't want to call you garbage.
Don't post messy jokes everywhere, okay?
look down upon/on
Ok, now let's answer the landlord's question. You should use proe5.0.
The best way to solve this problem is to draw an influence curve in the middle.
As long as it is adjusted, it can still have a smooth effect.
As for the non-tangency, it is mainly the problem of parameter setting, because some dimensions of your curve have been set when you draw it.
If it is tangent, it will conflict, so it cannot be tangent.
hope this helps