Those worshipped and provided for by their descendants become benevolent ghosts. Aggrieved ghosts or those with no one to look after them will be unable to find peace, and will haunt the mundane world.
鬼魂、鬼魂，所謂鬼就是魂，受到家人祭祀、供奉的是善鬼；冤死、橫死、無人供養的，是會作祟、不安的鬼。