What was the name of Chengdu before?

Yizhou actually refers to the Sichuan Basin.

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The following is a list of the top 10 cities in China's history. During the Xia, Shang and Zhou Dynasties, there were no cities in China, so this list began in the Warring States Period:

Top 10 cities in the Warring States Period: Linzi, Xianyang, Handan, Daliang (Kaifeng), Du Ying (Jingzhou), Cheng Zheng (Xinzheng), Qufu, Luoyang, Chengdu and Gusu.

Before the Western Han Dynasty 10 Cities: Chang 'an (Xi 'an), Luoyang, Chengdu, Wancheng (Nanyang), Handan, Linzi, Pengcheng (Xuzhou), Changsha, Panyu (Guangzhou) and Guangling (Yangzhou).

Top 10 cities at the end of the Eastern Han Dynasty: Luoyang, Chang 'an (Xi 'an), Wancheng (Nanyang), Chengdu, Pengcheng (Xuzhou), Xuchang, Jingzhou, Changsha, Xiangyang and Yecheng (now disappeared).

Top 10 cities in the Three Kingdoms period: Luoyang, Chang 'an (Xi 'an), Jianye (Nanjing), Chengdu, Jingzhou, Xuchang, Xuzhou, Changsha, Liangzhou (Wuwei) and Youzhou (Beijing).

Top 10 cities in Jin Dynasty: Luoyang, Chang 'an (Xi 'an), Jiankang (Nanjing), Yecheng (now disappeared), Chengdu, Guzang (Wuwei), Guo Xiang (Xingtai), Shouchun, Guangling (Yangzhou) and Gusu.

Top 10 cities in the Southern and Northern Dynasties: Jiankang (Nanjing), Luoyang, Chang 'an (Xi 'an), Pingcheng (Datong), Yecheng (now disappeared), Chengdu, Guangzhou, Shouchun, Jingzhou and Guangling (Yangzhou).

Top 10 in Sui and Tang Dynasties: Chang 'an (Xi 'an), Luoyang, Yangzhou, Chengdu, Taiyuan, Qiantang (Hangzhou), Jingzhou, Jinling (Nanjing), Guangzhou and Youzhou (Beijing).

Top 10 Cities in the Five Dynasties and Ten Kingdoms Period: Bianzhou (Kaifeng), Luoyang, Jinling (Nanjing), Hangzhou, Fuzhou, Guangzhou, Chengdu, Changsha, Jingzhou and Yangzhou.

[The Five Dynasties and Ten Kingdoms period is a period of rapid rise of southern cities]

Top 10: Bianjing (Kaifeng), Yangzhou, Hangzhou, Fuzhou, Quanzhou, Guangzhou, Mingzhou (Ningbo), Jinling (Nanjing), Chengdu and Changsha.

Top 10 cities in the golden age of Southern Song Dynasty: Lin 'an (Hangzhou), Quanzhou, Fuzhou, Guangzhou, Mingzhou (Ningbo), Jinling (Nanjing), Yangzhou, Changsha, Zhongdu (Beijing) and Chengdu.

Top 10 cities in Dayuan period: Quanzhou, Dadu (Beijing), Yangzhou, Guangzhou, Fuzhou, Mingzhou (Ningbo), Hangzhou, Zhongqing (Kunming), Chengdu and Liaoyang.

Top 10 in Ming Dynasty: Beijing, Nanjing, Yangzhou, Suzhou, Hangzhou, Fuzhou, Guangzhou, Mingzhou (Ningbo), Chengdu and Jinan.

Top 10 in Qing Dynasty: Beijing, Suzhou, Nanjing, Hangzhou, Jinan, Guangzhou, Tianjin, Fuzhou, Chengdu and Wuhan.

Top 10 (excluding Hong Kong and Taiwan): Shanghai, Tianjin, Wuhan, Guangzhou, Nanjing, Fengtian (Shenyang), Jinan, Chongqing, Beiping (Beijing) and Chengdu.