It is believed that before Guru Rinpoche left to subdue a demon, he spent several months in Chumphu monastery. While in Chumphu, he demonstrated several miracles such as: when he was sitting in the meditating position, he left his body and foot imprint on the cave. It is also believed that he created the divine image of Khandu Dorji Phagmo, which is visible today in the monastery. The miracle of the statue is that a thread can be placed or circled around the statue. It meant that the statue floats and does not rest on the seat.