- Title: 醋娘子
- Cantonese/Mandarin title: Cho Neong Zi/ Cu Niang Zi
- English title: Lady Sour
- Genre: Romance, family
- Episodes: 20
- Broadcast network: TVB
- Broadcast period: 2014-Dec-01to 2014-Dec-28
- Air time: Monday to Friday 20:30 to 21:30
Cho Ching (Myolie Wu) and her mother, Cho Cho Bat Yuet (Gigi Wong), who depend on conning people for a living. During a bad con, involving the town of Mo Tak and Gai Chun(Ron Ng), the pair run away to the town of Yau Tak. Cho Ching runs into Chin Tung (Him Law), the heir of Sum Cho Vinegar, who she has a crush on. She marries into the Chin family but with a lot of rules and responsibility, how will Cho Ching survive?
- Myolie Wu as Cho Ching / Ching Ching / Cho Neong Zi, the protagonist.
- Ron Ng as Gai Chun, loves Cho Ching.
- Him Law as Chin Tung / Tung Tung, Cho Ching's love interest.
- Eliza Sam as Shan Cha, Chin Tung's servant and love interest.
- Gigi Wong as Cho Cho Bat Yuet, Cho Ching's mother and Gai So So's life saver.
- Alice Chan as Chin Sheung, Chin Chung's sister and Chin Tung's aunt.
- Jerry Koo as Chin Chung, Chin Tung's father.
- Jade Leung as Gai So So, Gai Chun's sister.
- Derek Kwok as Fu Sum Yan, a Yamen official.
- Koni Lui as Lang Choi Ci, Fu Sum Yan's wife and Chin's family relative.
- Owen Cheung as extra
- Lily Li as extra
- Suet Nei as extra