Modern Chinese cities are defined from the administrative view and classified into several administrative categories, which makes it inconsistent between Chinese cities and their counterparts in western countries. Without easy access to fine-scale data, researchers have to rely heavily on statistical and aggregated indicators available in officially released yearbooks, to understand Chinese city system. Not to mention the data quality of yearbooks, it is problematic that a large number of towns or downtown areas of counties are not addressed in yearbooks.
In the recent three years, Dr Ying Long's group has been working on redefining Chinese city system using various types of emerging new data to address the aforementioned fundamental problem. Please see Project 31 Redefining Chinese City System for the recent progress.
Data Released 34 Points of interest of China
Data Released 35 High-resolution Multi-temporal Mapping of Global Urban Land
Project 28 Polycentric China
Project 33 Monitoring Urbanizing China with New Data
Project 34 Healthy Cities
We also have several new courses online (like AIUM 2018 "Applied Urban Modeling", a new course Dr Long taught in the autumn semester in Tsinghua for undergraduate students, and BDUP 2017 "Big Data and Urban Planning" which has been updated a lot in comparing with the course in 2016)