Who knows? Maybe Qiao Nan would feel bad for them and agree.
If Qiao Nan were married to Chen Jun, there was no way that Chen Jun would end up in such a situation. Also, they wouldn't have to worry about Feng Feng's upbringing if Qiao Nan were the one taking care of him.
Even if Chen Jun were to pass away, the elders could entrust Qiao Nan with Feng Feng when they left this world.
However, Qiao Zijin wasn't someone nearly as reliable. Although the elders were still alive and well, they couldn't help but worry about putting Chen Feng in Qiao Zijin's hand.
If it weren't for Chen Jun's illness and their old age, there was no way the elders would contact Qiao Zijin and send their grandson away. However, it couldn't be helped that they no longer had the energy to take care of both Chen Jun and Chen Feng.
