有歷史的學校：課室留下的神秘內情 | Hong Kong Urban Legends | Historic Schools: The Hidden Mysteries Left in Classrooms｜香港都市靈異傳說 EP17
在一些歷史悠久的學校裡，黑板不只是教學工具，更像記錄時間的載體。有時候課室裡會出現一些不像現代語言的字跡，沒人知道是誰寫下，也無法完全解讀，留下無數想像空間。
In certain aging schools, blackboards seem to hold more than lessons. Unfamiliar markings occasionally appear—symbols that resemble no known language. Their origins remain unclear, inviting curiosity, unease, and endless speculation.