Pou（1301-1382）; a Koryo Son monk from 洪州， commonly known by his Buddhist name of T'aego 太古. He entered the sangha at age 13， is said to have become determined to resolve his doubt-mass at the age of 19， and succeeded to penetrate the mu kong'an 无公安 and experience deep enlightenment at the age of 30. In 1341 he took up residence at Chunghungsa 重兴寺 of Mt. Samgak 三角山， where he gathered many students. He constructed a hermitage to the east of the temple， which he called T'aego， and there he wrote the Kailp'yon 歌一篇. He later wrote the Sanjungjallakka 山中自乐歌. He was subsequently invited to be royal teacher 王师 and national teacher 国师. He was a transmitter of the Imje （Linji 临济） style of Son in the tradition of Ta-hui 大慧， emphasizing reflection on the hwadu 话头. He was famous for his poetry， which was collected by his students.