Eavesdrop 

Di San and Si Shui felt a chill on their spin when they saw Feng Er's devious smile. It's as if they have seen something they shouldn't have seen and so they immediately looked away. 

Fortunately, Feng Er seemed to not have noticed their evasive reaction as she spoke. "I think paranoia is inherent in the Lin family." She said. "First, it was Lin Yuxiu. Then, it was her daughter. Naturally, their paranoia was triggered of their excessive love towards their husband to the point they wanted to possess all of him." She took a sip of water before she continued. "She becomes excessively jealous with other women approaching her husband, disregarding their intentions. I concluded it is paranoia." She explained. 

Di San and Si Shui finally felt they were enlightened. "So, the females in the Lin family inherits paranoia in their genes…" they said. "Then, maybe, we can – " they looked at each other before they turned to Feng Er with widened eyes.