摘要
A combination of massive spectroscopic surveys and Gaia DR2 has brought light into the chemical and kinematical properties of a large number of stars,thus building up a mature picture of the Gaia-Sausage-Enceladus (GSE) galaxy and unraveling its impact on the reconstruction of the history of our Galaxy.Based on the largest spectroscopic data set established in the LAMOST survey [1,2],Profs.