Professor Mingguo Zhai works in the State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, University of Chinese Academy of Sciences, China and specializes in Precambrian and metamorphic geology, and petrology. His main research interests are Precambrian tectonic evolution in China; High-temperature and high-pressure metamorphiam and reconstruction of Precambrian; Ultra-high-pressure metamorphism and continental collision; Mesozoic tectonic evolution of the North China Block.