Introduction to Pilu Hall: From the front, Pilu Hall looks like a stone bridge. There is a grotto under the "bridge". In the grotto, there is a Bodhisattva seat sculpture made of pure white jade, which is in the shape of an Indian Bodhisattva. There is a couplet in the grotto, the first couplet: All requests are answered in front of the great master; the second couplet: There are gods in the Vajra Cave and they have no sense; the horizontal couplet: Cause and effect are not unclear.