The author pedaled more than 2,000 kilometers , much of it through epic smog . Charity bike ride started in Shenzhen , finished in Shanghai . Comment: Most of the riders in author 's group found the air quality disturbing .
The author pedaled more than 2,000 kilometers , much of it through epic smog . Charity bike ride started in Shenzhen , finished in Shanghai . Some area of ride were gorgeous and smog-free . Most of the riders in author 's group found the air quality disturbing .