Minor character. The son of Su Xianyan and Cheng Simian, born one year after their marriage. He was the fattest baby born that day according to the doctor. His formal name was personally chosen by his great-grandfather and is described as extremely proper. Cheng Simian gave him the nickname Rou Rou meaning Meatball because he was heavy at birth and because Cheng Simian loves eating meat. This nickname later became one of the most unspeakable things in his life and he firmly believed only such an unreliable mother could come up with such an unreliable nickname.
