"An Overview of Taiping" (volume 156) is quoted from Jin: "Liu Bei once sent Zhuge Liang to Beijing, and when he saw the hill of Moling Mountain, he sighed,' There are dragons in the mountain and stones in the tiger house'".
"Dragon Tiger" describes the majestic terrain of Nanjing. Nanjing, known as Jinling in ancient times, also known as Jianye and Jiankang, is the ancient capital of the Six Dynasties. The so-called "Six Dynasties" refers to the Six Dynasties around the Wu and Eastern Jin Dynasties in the Three Kingdoms and the Song, Qi, Liang and Chen Dynasties in the Southern Dynasties.
The Strange Tales of the Six Dynasties compiled by Zhang Dunyi in the Song Dynasty recorded and investigated the scenic spots, gates and towers of Jinling in detail, and also quoted Zhuge Liang's two original words about Jinling's topography: "In the middle, there are stone houses."
Zhongfu, that is, Zhongshan, also known as Zijinshan, is in the eastern suburb of Nanjing today. Shicheng, also known as Stone, or Shicheng. Jinling and Shicheng, in fact, have long merged into a Nanjing city. Therefore, in addition to the ancient names of Jinling and Jianye, Nanjing also has a nickname called Stone City.
There is a saying in "Five Degrees of Fu" by Zuo Si, a writer in Jin Dynasty: "A glorious car is more advantageous than a stone city". The original note said: "Shicheng is in the west of Jianye, near the river." Another note: "There are vaults and military reserves in Stone Town, so there are abundant military vehicles (military vehicles) in Stone Town." It can be seen that Shicheng was close to Jinling at that time, but it was two independent cities.
To the east of Jinling is the Zhongshan Mountain, which stretches like the dragon of the world, and to the west is the stone city that stands tall and eyeing. This is the so-called "Dragon Pan and Tiger Ju" or "Tiger Ju Long Pan".
Extended data:
Nanjing belongs to the hilly area of Ningzhenyang, mainly with low mountains and gentle hills. Low mountains account for 3.5% of the total land area, hills account for 4.3%, hills account for 53%, and plains, depressions, rivers and lakes account for 39.2%.
Ningzhen Mountain Range and Laoshan Mountain in the north of the Yangtze River run through the middle of the city. There are Hengshan Mountain and Donglu Mountain in the south, which are located in the southern boundary of the hilly area of Qinhuai River Basin. Nanjing's plane position is long from north to south and narrow from east to west, forming a positive north-south direction; The straight-line distance from north to south is 150km, the east-west width in the middle is 50-70km, and the east-west width at the north and south ends is about 30km. The southern part is a landform complex composed of low mountains, hills, valley plains, lakeside plains and rivers along the river.
Baidu Encyclopedia-Nanjing