Xiao Jian is a lively and outgoing child, his academic performance has always been among the top, and he likes socializing and is enthusiastic about helping classmates. But in the past half year, he often daydreams alone, is absent-minded in class, fails to finish homework after class, distances himself from classmates, and even lazily refuses to play with his close friends. Every morning, he only gets up after being repeatedly urged by his family several times. Being late for school, leaving early, or even skipping classes are common occurrences. He has become increasingly lazy, changing his usual habit of being particular about his appearance. He doesn't change or wash his clothes, doesn't make his bed after getting up, and sometimes immerses himself in his own world, smiling for no reason... Helpless, his family sent him to the psychiatric hospital.