Lin Xia and Nan Hua (2)

Traveling Doctor Liu was someone who understood the meaning of privacy well. Unless the other party was willing, he would never told their past to other people. 

The main reason why Nan Hua knew was that she guessed it based on Lin Xia's state and appearance. Lin Xia clearly cared for her family greatly and it was also because of them that she had conflicts with the Lin Family.

And when Lin Xia was around her family, she looked more relaxed.

Nan Hua had been fighting on the frontline for a long time and before that, her main profession was an assassin. As an assassin, she was good at observing people and guessed their state.

Because when they were relaxed, it was also the best time for her to make a move.

A person who has their guard down could be killed easier than people who had their guard up all the time. 

Through this observation, Nan Hua could see Lin Xia's state. 

She was relaxed around her family.