In the past, Lanfen found out that Liu Jin had been trying to get his parents back together. That was why she got rid of him quickly.
But Liu Jin was smarter this time. To win the fight, he knew that he had to get his father to help him. That wasn't hard. His father was smart. All he had to do was drop hints here and there and his father would piece things together quickly.
Right now, his father must already have a hunch that Lanfen had caused his divorce with Nana. Knowing how obsessed his father was with his mother, he would surely deal with Lanfen himself. Liu Jin won't even need to lift a finger. His father would drag that bitch to hell.
Now the question is, how did Liu Jin find out that Lanfen had caused his parent's divorce?
He didn't. He merely guessed it. He used his skill on her and lo and behold, Lanfen's greatest fear was Shuren finding out that Nana still loved him.
