The "Ping'an Tie", or "Letter of Peace", a famous work of running script calligraphy by [[王羲之|王羲之|wang2 xi1 zhi1]] from the Eastern Jin Dynasty. The original is lost, but a Tang Dynasty tracing on yellow paper is held at the National Palace Museum in Taipei. It is often displayed alongside the [[何如帖|何如帖|he2 ru2 tie3]] and [[奉橘帖|奉橘帖|feng4 ju2 tie3]].