Fui-On Shing is a ghost film with a supporting role. There is a passage in which the mage turns into soap and watches the fairy take a bath. What's the name of this movie? thank you

If I remember correctly, this movie "Magic Fairy School" shows a woman taking a bath with her brother played by Billy Lau. Hong Kong and Taiwan ghost film "Magic Road" film type: love/action/fantasy starring:,,, Synopsis: Evil Ji has waited for 500 years, hoping that when the seven-star witch (common name, colorful clothes) grows up, the two demons will become one, open the magic door and rule the world. Master Bai Mei, the head of the Microwave School, snatched colorful clothes and took them to the door in order to break the evil Ji's plan. At the age of eighteen, Bai Mei married Liao Zhen, who was born in a sunny day, hoping to get rid of the magic of colorful clothes and let the evil Ji's plan fail. Unexpectedly, Zhen ran away from home on her wedding day, went up the mountain to seek immortality and became a fax school. Qiu Chunan, the person in charge of fax, and Deng Tianguang, the big disciple, have a good impression on Miner and Yan, the microwave disciple, respectively, and often make excuses to befriend and make many jokes. Although Zhen has met with Cai Yi many times, he gradually became intimate, but he just didn't know each other's identity. When Min realizes the earthquake, she wants to discuss their marriage with Qiu. Just when Qiu was at a loss, the evil Ji suddenly killed ...