Introduction To promote East Asian regional astronomy research cooperation, the East Asian Core Observatory Association (EACOA) and The East Asian Observatory (EAO) jointly encourage and support highly qualified early-career researchers from all over the world to join and conduct joint research activities with colleagues at the EACOA member institutes which are Academia Sinica Institute of Astronomy and Astrophysics, National Astronomical Observatories Chinese Academy of Sciences, National Astronomical Observatory of Japan, Korea Astronomy and Space Science Institute, Purple Mountain Observatory Chinese Academy of Sciences and Shanghai Astronomical Observatory Chinese Academy of Sciences. The EAO Fellowship is a postdoctoral position to work at the EAO, Hi