384 years ago today, on March 8, 1641 (January 27, 1641, the lunar calendar), Xu Xiake, a geographer of the Ming Dynasty in China, passed away. Xu Xiake, a geographer and traveler, died. Xu Xiake, a great geographer and traveler in the Ming Dynasty, was named Hongzu, and the word Zhenzhi. From Jiangyin County, Jiangsu Province. Born on November 27, the 14th year of Wanli (January 5, 1587), and died on the 27th day of the first month of the 14th year of Chongzhen (March 8, 1641). He was studious when he was a child and read extensively about maps, classics and local records. Seeing the darkness of politics at the end of the Ming Dynasty, he was reluctant to enter an official position and concentrated on traveling. Xu Xiake began to travel to the famous mountains and mountains of the motherland at the age of 21. In more than 30 years, he traveled to most of China except the Northeast and Northwest. He wrote on-site inspections into "Zhejiang Tour Diary","Chu Tour Diary","Guangdong Journey Diary","Binhai Tour Diary" and so on. Later generations compiled and compiled these travel diaries into "Xu Xiake's Travels", which was first published in 1776 and became the world's first masterpiece to systematically record karst landforms.