Mongin, Jeong Hakkyo(夢人 丁學敎, 1832-1914) was a calligrapher calligrapher of the late Joseon Dynasty, and was good at painting and writing. He painted the subject of 'Oddly Shaped Rock' for a lifetime. This work was produced in 1910 in Gapyeong. The following contents remain in the picture. (Poem) : Standing between cliffs does not tilt. Even if the wind is blown, it does not collapse.