Bai Xiao and An Zhiyuan have already returned to Modu. Both have their own jobs, so there's no time to waste. Moreover, An Zhiyuan doesn't get along with Wei Shufen; having to deal with this stepmother exhausts him.
Wei Shufen hasn't changed over the years, still pretending to be compassionate, though her words are filled with subtle barbs.
For instance, when she met Bai Xiao, she greeted her warmly as if Bai Xiao were really her daughter-in-law, inquiring about this and that, pretending to care about them, although she wouldn't even bother calling them in private.
They stayed at home for two nights. An Zhixiang has become a war correspondent and, due to special reasons, was sent to a war-torn foreign country and hasn't returned for a long time. An Zhiyuan is naturally aware of An Zhixiang's current situation and knows he has matured beyond recognition.
He is much more mature now, with unique insights and charisma, never reckless as he used to be.