Po-Eun Is the pseudonym of a loyal subject Chong Mong-Chu (1400 A.D.) who was a famous poet and whose poem “I would not serve a second master though I might be crucified a hundred times” is known to every Korean. He was a pioneer in the field of physics. The diagram represents his unerring loyalty to the king and country towards the end of the Koryo dynasty. The pattern has 36 movements.