After coming out, Yun Xi had been thinking about this matter the entire way. She initially thought that Liu Wei and her nominal grandfather had gotten together because of love. At the very least, the two of them should have had a good impression of each other. She did not expect Chen Sheng to be the clown all along.
From the conversation just now, the two of them had intended to squeeze the last bit of Chen Sheng's wealth before they were willing to stop.
Moreover, Chen Xin was not Chen Sheng's biological son. Presumably, he would not be a reliable son to Chen Sheng in any way. In the end, Chen Sheng only had Chen Li as his biological child.