The Bupgo is some kind of drum... um... actually very big Drum that is beaten when worshiping at Buddhist temples or when performing ceremonies. The Bupgo is played twice a day, in the morning and evening. It is said that the purpose of beating of the Bupgo is to save all menkind in the the world. I was very lucky. when I was visit some temple, I got a chance  to photograph that moments  just in time.