Introduction to the Zhongshan Ding: The "Zhongshan Ding" has a diameter of 1866 mm, a height of 1925 mm, an inscription height of 590 mm, and a base width of 1912 mm, which respectively represent Dr. Sun Yat-sen's birth, death time, years of life, as well as the overthrow of the imperial system and the establishment of the Ding. Year of the Republic of China.