One day Si Qilin came home from get off work and found a black milk cat and a note at the door. However, the words in the letter made Si Qilin have a lot of black questions in his head... "It's bad luck for you if you meet me." Si Qilin flicked the note between his fingers and flew away. The cat at the door also disappeared. Si Qilin said tremblingly, "I... I... I can't meet... A ghost, right?"