Huajian Yao is a Professor of Geophysics at the University of Science and Technology of China (USTC). He received his B.Sc. and M.Sc. at UTSC, and Ph.D. in geophysics at MIT. His main research interests include seismic tomography/imaging of crust and upper mantle structure using earthquake and ambient noise data, lithospheric anisotropy and deformation, kinematic rupture process and seismic radiation of large earthquakes, seismic array data analysis, and geophysical inversion methods. His recent research focuses on the development of joint inversion methods for better constraining seismic structure of the Earth, lithospheric deformation and tectonics of the Tibetan Plateau and southeast Asia, dense array seismology using passive and active sources, and multi-scale inversion of earthquake rupture.