Kuixing Liu joined the China Energy Group in February 2014 as a visiting researcher. He is a Post-doc and assistant researcher from the college of Architecture and Urban Planning of Tongji University. He received his Bachelor's Degree in Architectural Environment and Equipment Engineering from Tianjin University, and his Ph.D from the Building Energy Conservation Center of Tianjin University. His Ph.D thesis focused on methods in determining design parameters of outdoor air. His other research area includes verification and diagnosis of existing building energy efficiency.