I went to an older area of the town today. I guess not every part of the city is clean and perfect.
Overall, Shenzhen doesn’t seem as crowded as Beijing or Shanghai. It is actually not too bad with traffic and on the subway.
I noticed Shenzhen uses the DVB-C standard for cable TV. It means cable companies don’t have to force their customers to use certain hardware, but customers can have a choice and buy any DVB-C compatible receiver hardware. It is all digital and there are about 100 channels here.