First of all, it is definitely impossible for Lu Han to have an argument with Guan Xiaotong's mother. Although Guan Xiaotong's family is relatively supportive of their relationship, there is nothing too opposed. However, while Guan Xiaotong is still in college, it is a bit premature to think about her future marriage. And I think Guan Xiaotong's mother still wants Guan Xiaotong to settle down after working in the society for a few years, and then marry Lu Han. Lu Han at this time, I think, must be afraid to quarrel with Guan Xiaotong's mother. If they really love each other, Lu Han must compromise at this time.
In addition, Lu Han and Guan Xiaotong also had some backdating. Guan Xiaotong was informed by the school that he was busy filming in Weibo, which delayed his studies. Although Lu Han made it clear at that time that she would support her, it was an irresponsible performance. Personally, I think that if he really loves Guan Xiaotong, he should support Guan Xiaotong to finish his studies first. After finishing her studies, Guan Xiaotong should have a better chance, which will be of great benefit to her future development, instead of pampering her. Just tell Guan Xiaotong that he will keep it in the future. In my opinion, this is not a love story, and it will probably hurt Guan Xiaotong.