A Fist Within Four Walls (Chinese: ;城寨英雄; literally "walled city heroes") is a 2016 Hong Kong action drama produced by TVB, starring Ruco Chan, Nancy Wu, Benjamin Yang as the main leads with Philip Ng, Grace Wong and Moon Lau in main supporting roles.
The drama revolves around Chor Au-Kuen, played by Ruco Chan, a gifted martial arts novice who returns to the Kowloon Walled City fifteen years to search for his missing sister, takes on the duty of protecting the walled city against evildoers.
This series contains examples of:
- Aw, Look! They Really Do Love Each Other: Au-Kuen and Tiu Lang, at the end.
- Mr. Exposition: But Tak-liu is generally the one to explain to Au-Kuen about things in the Walled City in the beginning, and the audience also learns more about life within from his experiences.
- In-Series Nickname: Chor Au-Kuen is known as 'Fist Guy', Duen Ying-fung is known as 'Tooth guy' due to his dentistry practise.
- Karmic Butt-Monkey: Lee Fat is often beaten up and is eventually reduced to a cripple, but considering how he repeatedly sells his own daughter Yam-Yam off just so he could gamble more, his fate is more than well-deserved.
- Long-Lost Relative: Fa Man is Au-Kuen's sister.
- Neutral No Longer: Yuen-Fung at first is content to remain a dentist just so his family won't be attacked by the Fellow Association, but after witnessing Kuen's bravery while trying to save Yam-yam, he resolves to take a stand.
- Redemption Equals Death: Duen Chit-keung's Moment of Weakness led him to frame Au-Kuen and Man's father for the death of his brother, and he cowardly avoids fighting at all costs. When said killer returns and threatens the death of the family, he Grew a Spine and fought back at the cost of his life.
- She-Fu: In spades, most of the female protagonists can fight just as well, if not better, than the male protagonists.
- Signature Move: The "Fierce Tiger Climbing Mountain" technique of Au-Kuen's father. It's a plot point in that it was believed to be the technique that killed Duen Tung-tin, which Au-Kuen initially refused to relearn, but which ends up being the strike to eliminate the Big Bad.
- Too Good for This Sinful Earth: Yam-Yam, in spite of all her hopes that her father would start over and her dreams to be a news columnist, is raped and killed from yet another triad boss her father owed debts to.
- Wretched Hive: The Walled City is this at the start, having fallen into ruin and run by triads.
