I Build a Mansion in the Underworld

[The heroine makes a fortune + new interpretation of the underworld system + unit story] There is an "illegally built mansion" by the Santu River that belongs to Miss Zhao's family. Because her husband made a yin and yang prophecy before his death, Zhao Pingnan waited in the underworld for sixteen years and missed two reincarnations, only to end up waiting for her husband to take Bai Yueguang with him; No matter, I don't want this person anymore, and I don't want this reincarnation anymore. In the past sixteen years, she has become familiar with the ways of yin and yang business. With the help of the priest's partial protection, she has become richer and richer in the underworld, and built the largest mansion. It is said that money is something external to the body and will not be taken away until death. Miss Zhao thought: Since I can't take it back, I might as well stay here. So she broke the prophecy and sent her husband into the realm of reincarnation. From then on, she only wanted to exchange money and not get involved in emotional relationships. Little did she know that she had incurred a lot of mandarin duck debts from her previous life and was about to pay them off one by one. [Getting rich and building a career and plot story 1:1] [There is only one male protagonist, the others are just passers-by]