It's essentially a misunderstanding and gets solved within 15 chapters
Incredibly good! A novel that starts with an old man who was transmigrated to the world, he even got a cheat! However, he didn't get to cultivate. He builds an incredibly successful business empire, has a ludicrous amount of adopted sons and he sets them in the path of immortality hoping that one of them will get him a pill to break through to the next level, so he can become a cultivator himself.
A very refreshing setting, where our MC has been through the vicissitudes of life, has a mature outlook, and doesn't court death left and right. I'd highly recommend it.