All Laws Borrowed, I Alone Owe

In a world where cultivators refine spiritual roots and build Dao foundations by borrowing the spiritual energy of heaven and earth to seek immortality, only Su Ji is born with an absolute spiritual void. For seventeen years, he could not draw qi into his body, and after three years of bitter cultivation, he was still judged as a crippled body. Yet on the day of re-testing, the spirit-testing stone revealed an invisible heavenly debt: nine thousand nine hundred and ninety-nine years, due from birth. The sect elders discovered that Su Ji's void body was the perfect vessel to inherit the ancestral debt, and they planned to refine his bones and strip his soul to repay the entire sect's debt. In desperation, Su Ji borrowed three breaths of sword intent from the thousand-year-buried Qingxuan Ancestor, slashing down an elder with one sword and breaking free. The price: his mother's face vanished forever from his memory. From then on, he walked a path no one had ever taken—not cultivating spiritual roots, not building a Dao foundation, but borrowing all laws, with every price to be repaid. Borrow a wisp of spiritual power, lose years of life; borrow a divine ability, sacrifice a memory; borrow the great Dao of heaven and earth, and risk losing his name and future. As the sect, the Tianheng Bureau, and unknown creditors come after him one after another, Su Ji realizes that what he owes is not just a debt. Nine thousand nine hundred and ninety-nine years ago, another 'Su Ji' had borrowed the first debt from heaven and earth. And in this life, he must find out where the debt came from, and survive until it is repaid. — Description from novelcodex.org