According to social norms and etiquette, when someone has lowered their stance to this extent, it wouldn't be too good not to soften.
However, the recent events Chen Mo endured were life-threatening, could this be considered normal social norms?
If Chen Mo wanted to deal with this father and son duo, he would still need to rely on Guan Xiyun's power. From that perspective, Chen Mo wouldn't do it since Guan Xiyun was pregnant. As a man, Chen Mo couldn't always call on a woman for help.
So he had to rely on some maneuvering. Now, what advantages did he have?
His combat power was good, but in this era, relying solely on that could easily lead to trouble.
Besides, having over ten billion wasn't enough to crush the Wang Family. Even if they didn't have as much, the gap wasn't large enough to be overwhelming. It still required strategic action, not brute force like relying on Guan Xiyun.