For an idea of how these cities look here are some drone shots:

Shenzhen: https://www.youtube.com/watch?v=iKLrmi5eOn8

Shanghai: https://www.youtube.com/watch?v=1cC-j4_NtvE

Guangzhou: https://www.youtube.com/watch?v=TNlN1_ANaJs

Chongqing: https://www.youtube.com/watch?v=07dWi-MJReM

Shenyang: https://www.youtube.com/watch?v=QGBSpoTXZmw

Suzhou: https://www.youtube.com/watch?v=4aXLMS-miKU

Dalian: https://www.youtube.com/watch?v=AeEJNNMcR1s

Zhengzhou: https://www.youtube.com/watch?v=KiOlUYfM310

Chengdu: https://www.youtube.com/watch?v=0xwVQ4Jb1zc