Chengdu, a key hub in southwestern China, is the most livable city on the Chinese mainland, according to a recent report by the Asian Development Bank.
The research is based on an evaluation system called the Environmental Livability Index, which factors in the quality of urban aquatic environments, water resources, air and the management of solid waste and the environment.
The 33 respondent cities were chosen based on data availability. Most of the data used in the evaluation were sourced from published yearbooks in China and environmental bulletins published by provinces and cities, with the latest data from 2011.