Kingdom Yuen (苑瓊丹) played Raymond Lam’s (林峯) mother and a gambler in web drama, PTU 2019 (PTU機動部隊) and created jokes occasionally. She said: “I cannot remember if I said any pornography jokes before and everyone always laughs. The film director and crew team are very nice and they give me lesser restrictions. Sometimes, the film director called me and told me to think of something such as an exciting part to the scenes. Thank you for giving me the trust.”

When mentioned about establishing great rapport with Raymond, Kingdom explained they worked together in Mainland China previously and were close to each other in private. Other than the kinship in the series, the black triad tried to threaten Raymond by hanging Kingdom in the air around 10 storey high. She insisted to film the scene personally and said: “I am not worried as there is safety precaution and the crew team will not make fun of me.”