not sure, but it looks like you're mixing up two programs.

SkyPearls = China Southern = CZ
Eastern Miles = China Eastern = MU

both skyteam, both have limited miles, when using FB.

Not much difference between the two, although I have to say that MU is improving their quality level in big steps (apart from delays)

Don't expect any form of status match, it is an unknown phenomena in China.
Therefor it is quite hard to reach any status (MU silver = 50 flights or 100.000km in 24 month).