Answer the following question: Generate a question about the following movie plot: Grave-robbing Professor Kwok Tun Wong [Fat Chung] and his bungling assistants, Chicken [Billy Lau] and Sonny[?], make what they think might be a major find--three corpses from the Chien Lung reign. One is a woman, another looks like her son, and the third looks like the father. A family! Not only are they dressed in clothing and jewels from that period, but the corpses themselves are perfectly preserved. In fact, their flesh is still soft. The discerning viewer will recognize, of course, that the yellow talismans pasted on the corpses' foreheads are wards against the undead. This is not an ordinary family...it is a family of chiang-shih!Professor Kwok telephones Mr Nelsson, who requests a sample of the find, so the professor and Sonny transport the boy. On the way, the talisman is blown off the little chiang-shih's forehead and he escapes. Meanwhile, Chicken is attempting to discern the meaning to the talisman on Mama's forehead. He removes it in order to look it up in a book, which says that the talisman "touches yin and yang and unites the five elements. It can exorcise all kinds of spirits. It's called the 'corpse-appeasing talisman'. Any corpse pasted with it may get provoked. Descendents shouldn't tear it off or it may resurrect." While Chicken is reading, Mama [Pauline Wong] awakens. Thereafter follows seven minutes in which both hopping vampires try to get the bite on Chicken (actually, Papa succeeds) until the professor and Sonny return and help to subdue the vampires.Chicken takes his bitten arm to the local herbal store where Master Lin Chin Ying [Ching-Ying Lam] recognizes the bite as that from a vampire. Chicken won't tell the truth about where he got the bite so, after treating him, Master Lin follows Chicken. Lin's assistant Jen [Biao Yuen], an aspiring photographer/reporter follows Lin. Gigi [Lee Choi Fung Moon], Lin's daughter and Jen's girlfriend, follows Jen. The trail leads to Professor Kwok's house. When Kwok, Chicken, and Sonny go in search of the chiang-shih boy, Jen decides that this is...
Answer:
What did Kwok accidentally strip off the forehead of the boy vampire?