In Nov. 2018, Circular Electron Positron Collider (CEPC) publically released Conceptual Design Report (CDR) and entered into Technical Design Report (TDR) phase, which included
luminosity optimization, key technologies demonstration, such as magnets, SCRF cavities and accelerating unit, 650MHz high efficiency klystron, vacuum system, linac injector RF components,
electro-magntic seperator, SC magnets in Interaction region, etc. Parallely, CEPC siting and civil
engineering designs are also in progress. It is aimed that CEPC TDR be completed by the end of
2022.