English: The Korean calligraphy titled "Silsa gusijang" was written by Kim Jeonghee. The text in literary Chinese reads 攷(考)古證今,山海崇深。覈實在書,窮理在心。一源勿貳,要津可尋。貫徹萬卷,只此規箴。實事求是箴。
English: Kim Jeonghee or Chusa, Kim's pen name. Chusa is regarded the most greatest calligrapher in Korea. He was also a politician during the late period of Joseon Dynasty
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{{Information |Description={{ko|추사 김정희의 서예인 "실사구시장"}} {{en|The Korena calligraphy titled "Silsa gusijang" was written by Kim Jeonghee}} |Source=[http://www.art2me.org/images-art/08-gamsang/korean-art/07-joseon/index.html] |Date