It is common stereotype that China is polluted, dirty and crowded.
Somehow, it is true. Living is places like Jiansu, Zhejiang, Hebei will make you believe that there are no clear horizon for this country. Beijing wind will wash your face with dust instead of fresh air. In coastal Shanghai climate you will struggle to figure out if it is foggy or smoggy today. Water in rivers of Zhejiang will appear muddy and stagnant.
It seems to be crowded on every square meter of the land. No matter if you are in city or remote village - it feels the same. There is no other way, you are forced to be part of that crowd.
Do not be in a hurry to make your conclusion!
There are some wild places left. Buy a flight to Sichuan to restore your qi and take a rest. Rent a car in Chengdu and go west, in direction of Tibet. After six hours of drive highway will be replaced with mountain road, familiar Chinese faces will disappear. Former land of Tibetans will spread around you. Ten hours drive in direction of Tianli town. A beautiful drive - a lonely road, snow-capped mountain peaks and a blue sky with clear air. Do not be in a hurry. Slow down, park on a virgin snow on the side of the road and enjoy. As long as you can!