Skypass members on KE receive membership in their "Lifetime Million Miler Club" after flying 1 million miles with Sky Team. (Miles earned from non-airline partners and promo offers do not qualify).
There is also a "Morning Calm Premium Club" for those who reach 500.000 miles.
Both are treated as ST Elite+.
KE differentiates from other airlines as the lifetime memberships are the ones advertised, there are only three levels (the above two) and the regular Morning Calm Club (fly 50K in 2 years). I assume a lot of flyers would shy away from this program as it takes an extra 450,000 miles to reach mid-tier membership- which for most people would mean flying a few years with the lowest elite level status as opposed to enjoying top tier status on UA/AA immediately after reaching 100K and then probably become eligible for MillionMiler anyway.
I have 4 years left to go with FB after which I am looking forward to a long vacation from AF and NorthWorst.