Also known as Yeung Mong Suet, she is the daughter of Yeung Ching Sing. She was adopted by Wong San Man and Wai Suk Wan and later emigrated. She posed as a kindergarten teacher named Wai On Yi to get close to Ng Mei Yan and Nannán. She orchestrated revenge against those who destroyed her family ten years ago. She is cold, calculating, and deeply traumatized by her past. She ultimately confronts the police at Wong San Man's old residence in North Point, holding a bloodstained fruit knife.
