Mortal cultivation + devouring and tree-growing, a nobody with no spiritual roots rises from the bottom. A calculating approach to cultivation, ruthless and decisive.
After transmigrating to a world ruled by immortal sects, Su Mu is a pauper with no spiritual roots, no land, and a debt of seventeen taels. He doesn't even have the option of going back to farming.
Fortunately, he brought along a panel for a "Dao Fruit Tree": manuals, live cicadas, pills. Swallow them whole and he can nourish Dao Fruits, gaining Dao insights as soon as he consumes them.
So he devours the Cicada Listening Manual, eats a hundred cicadas in one night, and borrows money to swallow pills. His Cicada Listening Fist advances from beginner to its limit, until at last he hears the cicadas that have never stopped singing in the Patriarch's grave for ten thousand years.
Others enter immortal sects on the strength of their spiritual roots. He makes himself an immortal one bite at a time.