Yunnan Observatories;
Chinese Academy of Sciences;
Kunming 650011;
China;
Key Laboratory of the Structure and Evolution of Celestial Objects;
Chinese Academy of Sciences;
Kunming650216;
China;
Center for Astronomical Mega-Science;
Chinese Academy of Sciences;
Beijing 100012;
China;
University of the Chinese Academy of Sciences;
Beijing 100049;
China;
stars:; binaries:; close; --; stars:; binaries:; spectroscopic; --; stars:; binaries:; eclipsing; --; stars:evolution;