Introduction to the position of the presidium

Ceng Gong official post, mirror heart, ink paper, 29×38.2cm, written on the back of printed books and papers in Song Dynasty. On the back of the printed book, you can still see the printed words. Textual research based on Mr. Bonda's "Is Gu Shuhua a past tense?" Song Shu of Jin, Sui, Tang and Five Dynasties. This post was written when it was judged as Yue. The time should be ten years ago in JaeHee, Ning (1077). I was about 50 years old. His calligraphy is slender and his brushwork is clear, which is a rare Mo Bao.