Is Longxi or Dingxi better?

- the ancient humanistic capital of Gansu-the definition of Longxi/Kansai Xuefa I; Longxi-the earliest northwest metropolis in China's history after thousands of years. Second; Longxi-is one of the few cultural and historical place names in China that has been famous for thousands of years. Third; Longxi-the hometown of Chinese Yanhuang-is the historical and cultural center of Gansu that lasted for nearly two thousand years. Fourth; Longxi-is the birthplace of the early Guanlong civilization of the Chinese nation. Five; Longxi-the birthplace of the Tang Dynasty in Li Tang Empire; Longxi-the former provincial capital with the longest experience in modern Gansu. Seven; Longxi-Champion County, Gansu, China, Li Cheng and Li Qian, the top champions in the Tang Dynasty, worshipped the pillars in the Yuan Dynasty, and three champions in one county. Eight; Longxi-1 "Li's county is prosperous in the world", 2 "Lao Zi's hometown", 3 "Li Bai's hometown", 4 "Li He's hometown" in Shi Gui, 5 "Li Bing's hometown" in Dujiangyan, 6 "Li Shimin's hometown" in Qin Dynasty, 7 "Wang Guanwang's hometown" as a calligraphy master, 8 "Li Guiyu's hometown" as a literary genius in China, and 9 "a master of Chinese studies".