2. It's easy to understand that the big coffin head is relatively large and the small coffin head is relatively small. The orientation of the coffin head is also related to these three important factors. One is the local feng shui trend, the other is the date of birth of the elderly, and the third is the actual geographical environment at that time. The general orientation is to sit south facing north and east facing west. According to the landscape, it means sitting on the mountain and facing the water.