Night Candle Festival in Quan Am Bodhisattva Buddha Day is a respectful ritual to pray for peace and health of mankind in Dien Quang pagoda, Bac Ninh province, Vietnam. Quan Am (Guan Yin), often referred the “Goddess of Mercy” that attached to the compassion, is the most powerful female Bodhisattva in Buddhism, save sentient beings, especially in the fire, water, devil and swords.