After Chi Shuyan left, she thought about the evil father and daughter who liked to borrow luck. Like she said, since they liked to borrow it, she helped them borrow some. She didn't do anything; she just swapped their luck with the burial mound. Just nice, the turbulent burial mound in Yongning County had over 100,000 deaths' worth of immense yin energy and cadaveric qi, so the father and daughter could enjoy that to their hearts' content.
She didn't have to do anything to do this father and daughter pair in the future. Their own luck had been completely replaced with yin energy and cadaveric qi.
As long as a living person was tainted with just a bit of cadaveric qi, they would suffer both minor and major ailments as well as constant bad luck. Furthermore, all their luck had been completely replaced with cadaveric qi and yin energy. In the future, it would be hard for them to even live a normal life, to say nothing of the extravagant hope of a life of luxury.