Here the second story.
In the second semester, every class wes renewed. So I had new classmates. BUT I had also two members who feuded with each other. They were a young German college student and a middle aged Pole lady. The latter followed her Polish husband, who was a invited professor at a French university. Whatever.
They talk to each other from time to time, but I cannot say they were close.
But one day, around the end of the school year, They ended clashing.
During break time. the Polish lady started to be mad at the German girl, who was even able to repond to the yeller.
I didn' t realized what made the Polish woman flip out that way. I understood it after I heard what was going on from one of my classmates.
All through the second semester, the German girl kept looking down on the Polish lady.
The remark from the German girl "I'm sure you will settle down in France like many other Polish immigrants getting into illegaly to Germany." made The Polish lady completely blow off steam.
I bet she managed to keep her self-controle but she eventually must have said 'enough is enough'.

I realized in the world, not a few countries have antagonistic sentiment toward neighborers for historical and societal reasons.
Interestingly, I could notice Korean people and Japanese people get along quite well oversease, including me ㅎㅎ