Dan Elliott, China shows space skills with satellite rendezvous; China shows
its skills in space by maneuvering satellite near another in Earth orbit.
Associated Press, Nov. 10, 2010.
http://finance.yahoo.com/news/China-shows-space-skills-with-apf-4278565053.html?x=0&.v=2
("Using unclassified tracking data from the U.S. military, space-watchers
calculated that China maneuvered its SJ-12 satellite close to its SJ-06F
satellite on about Aug. 19.")
(b) SJ-12 实践十二号 卫星
(c) I read the news long time ago, possibly the following:
Katie Drummond, China’s Secret Satellite Rendezvous ‘Suggestive of a
Military Program.’ Wired, Aug. 31, 2010.
http://www.wired.com/dangerroom/2010/08/chinas-secret-satellite-rendezvous-suggestive-of-a-military-program/
Because no other source mentioned/ confirmed this, I did not take the news
seriously.