纸飞机 (Associated Names)

On their first encounter, the 5-year-old Tang Junhe regarded the 6-year-old Yang Xuan as a hero and willingly followed his example. Yang Xuan: “There are 12 ways to fold a paper airplane, don’t you know? I’ll teach you.” Ten years later, the 17-year-old Tang Junhe is living in Yang Xuan’s home as his younger brother…