Mulian's
@HomeMommy not exactly 乖乖 nice person... always eat and eat non stop...
then when she mati, become
@HomeMummy ... she needs to reincarnate...
But because she always eat and eat... tio sin too much... now need to reincarnate into hungry ghost.
Mulian monk very sad but very lovu his mommy. so he travel up knife mountain down frying oil pan to hell...
Eventually he tough it out and met his mommy at hell...
His filial piety touches Buddha heart. So Buddha say 15th of 7th lunar month is allow living people to show gratitude to their ancestors through feast offering and wayang.