In case you forget some character background:
-Chen Feng: was the thug who used to collect protection fees from small stalls like Old Li's stall.
Plot: Yang Chen trashes him for threatening Old Li and his family. He is later treated worse than a dog by his ex-girlfriend Zhang Ying. She tortured him daily and even made him rape Lin Kun.
-Feng Biao: Policeman corrupted who tried to threaten Yang Chen, got fired by Cai Yan after that. He now manage a small noodle store.