Gu Tongzhi is not a particularly well-behaved child because she committed something extremely serious in the eyes of her parents - puppy love; Gu Qinjue is considered a particularly rebellious child because he committed many things that outraged his parents, such as smoking, drinking and racing. Gu Tongzhi is a particularly stubborn child, because she stubbornly likes one person; Gu Qinjue is a particularly heartless person, because he never seems to like that person, just that person.