The Happy Ghost (1984)

"The Happy Ghost" is a 1984 Mystery movie directed by Clifton Ko Chi-Sum and starring by Raymond Wong Pak-Ming, Bonnie Law Ming-Chu. From a camping trip, a college girl took home an ancient rope to use to keep her torn backpack in place, not knowing it was used by a disgraced scholar to hang himself with decades before. The scholar's ghost resurrects at her school and befriended her and her two friends, and teaches them the importance of academic success, love, family and friendship.