Rosy Business Season 2: No Regrets

Sheren Tang as Cheng Kau-mui, known as Miss Kau, daughter of Cheng Long-kwan, the most powerful drug tycoon in Canton

Wayne Lai as Lau Sing, captain of a police crew in Canton

Fala Chen portrays Lau Ching, nicknamed Ching Ching, Sing's younger sister

Raymond Wong Ho-yin portrays Yeung Yeung, a member of Sing's police crew

Ngo Ka-nin portrays Tong Kat, Sing's subordinate and housemate

Mak Cheung-ching as Leung Fei-fan, known as Fei Fan Gor, a police captain and Sing's direct superior

Elliot Ngok as Cheng Long-kwan, Miss Kau's father

Susan Tse as Cheng Long-hei, the youngest of the Cheng siblings and one of four founding members of Tung Tai

Kwok Fung as Cheng Long-hung, the second oldest of the Cheng siblings, one of the four founding members of Tung Tai

Ben Wong as Cheng Siu-hong, Miss Kau's younger brother

Henry Lo as Choi Tai-fung, Kwan's brother-in-law and one of the four founding members of Tung Tai

Helen Ma as Chow Teet, known as Sister Teet, one of the four founding members of Tung Tai, and Miss Kau's loyal subordinate.

Kara Wai as Ng Lai-sim, known as Mrs. Yeung, Yeung Yeung's mother

Elena Kong as Chiu Tung-nei, Sing's wife and later ex-wife

King Kong as Colonel Mukaiyama Tetsuya, a Japanese general

Nancy Wu as Ma Lai-wah, a college student who is the daughter of Mui Lan-heung, Miss Kau's close childhood friend, marries Cheng Long-kwan to be his young concubine.

Li Shing-cheong as Wong Man-fai, nicknamed Dr. Wong Luk, a patriotic yet unlicensed doctor who lives with Mrs. Yeung as one of her tenants

Eileen Yeow as Lee Yuk-king, known as Mrs. Wong, Wong Luk's wife

Simon Lo as Che Wing-ping, nicknamed Big Che, Sing's housemate at Chu Lung Lane and a member of his police crew

Kelvin Leung as Che Wing-on, nicknamed Small Che, Big Che's younger brother, and a member of Sing's police crew