Jianhui Lian obtained his PhD degree from the University of Science and Technology of China in 2016. Since then he moved to University of Portsmouth in the UK, University of Utah in the U.S., and Max Planck Institute for Astronomy in Germany to do postdoctoral research. In this February, Jianhui Joined South-Western Institute for Astronomy Research at Yunnan University. Jianhui's research interests are mainly focusing on the formation and evolution of galaxies and our home Galaxy, the Milky Way, including their star formation and chemical evolution history, galaxy structure, stellar populations, and stellar radial migration.The Milky Way has long been used as a benchmark galaxy to constrain the galaxy formation and evolution models. The advent of massive stellar spectroscopic surveys (e.g., LAMOST, APOGEE, GALAH, Gaia) in the last decade has made this constraint incredibly strict. In this talk, I will introduce our recent works on the detailed evolutionary history of our Milky Way revealed by the chemical abundances of hundreds of thousands of stars which is only available with these massive stellar spectroscopic surveys. Following that, I will talk about by taking the advantage of the wide spatial coverage of the massive stellar spectroscopic surveys what we can learn about the integrated stellar populations of the Milky Way. This is the key to directly connect our Galaxy to the general galaxy population and understand how special/typical our home Galaxy is in the Universe.