The female protagonist is exchanged to study in the male protagonist's school. The male protagonist never forgets it, but the female protagonist's purpose is only to study. Since the male protagonist is a Chinese major but a native of Thailand, the female protagonist mentally agreed to be with the male protagonist. It's good to have a free boyfriend to study, so you don't suffer.
After the one-year exchange ended, the heroine returned to China and did not stay with the hero. He was left alone at the Thai campus of the headquarters.
Intention: It's just learning on campus, no way is too much, even if it hurts the heart of someone who loves you.