...
Chen Xi was feeling rather depressed now, primarily because he had misjudged Chen Qun's reaction. Naturally, in times of chaos, aristocratic families vie for power, seizing the opportunity to reclaim their status. That's when branch lineages, separated families, and concubine's children all try their luck.
Generally speaking, when the head of a family notices such implications, they would deal with it accordingly. Most would just let them go; if the situation was unclear or the family was hesitant to take a side, they might allow a separation of the household. In more serious cases, they would be expelled from the family.