Professor Qi Meng heads the Building Acoustics Group in School of Architecture and Design, Harbin Institute of Technology (HIT), Harbin, China. He has worked in environmental and architectural acoustics for 20 years, with more than 20 research projects supported by National Natural Science Foundation of China (NSFC), Natural Science Foundation of Heilongjiang Province and National Key Laboratories of China. He has more than 100 research papers. His work on acoustic theories, design guidance and products has brought major improvements to the noise control in indoor spaces and soundscape design in urban areas. Professor Yue Wu heads the Public Buildings and Low-carbon Technologies Group in School of Architecture and Design, Harbin Institute of Technology (HIT), Harbin, China. Her research interests include architectural acoustics and healthy building. She has presided over a number of national, provincial and ministerial projects supported by National Natural Science Foundation of China (NSFC), Natural Science Foundation of Heilongjiang Province. She has published more than 50 journal articles, and participated in the compilation of acoustic and hospital direction standards.