Selling the Ancestor for a Good Price at the Start

A modern auditor transmigrates into a cultivation family as an 'outer disciple in charge of accounts,' discovering that the essence of spiritual energy flow in this world is 'malice debt.' Using double-entry bookkeeping and risk management models, he revitalizes the bankrupt family through 'cooking the books' in a world of mad cultivators, and even manages to trap the Heavenly Dao. — Description from novelcodex.org