His research interests include healthy and smart cities, housing affordability and equity, as well as land use and transportation. The results of his studies are published in top international journals such as Journal of the American Planning Association, Journal of Planning Education and Research, Landscape and Urban Planning, Urban Studies, etc. He is now leading a NSF funded project to study how to plan an integrated active travel and green infrastructure system for mental wellbeing in disadvantaged communities through crowdsourcing technology.