For authors' affairs, you may contact my colleagues directly, this could make you get a faster reply and save your precious time.
(1) For new submission, please visit http://www.ActaMath.com and submit your paper online
(2) Before your paper is accepted (both English and Chinese Series), please contact Email: firstname.lastname@example.org
(3) After your paper is accepted by English Series, please contact Email: email@example.com
(4) After your paper is accepted by Chinese Series, please contact Email: firstname.lastname@example.org
Editorial Office of Acta Mathematica Sinica,
Academy of Mathematics and System Sciences,
Chinese Academy of Sciences, Beijing 100190, P. R. China