China Southern
Sky Pearl Club status is earned on qualifying miles or segments over a 12-month period on China Southern and partners. China Southern left SkyTeam in 2019 and belongs to no alliance, so its tiers unlock its own lounges and bilateral partner benefits. Confirm current thresholds on csair.com.
4 rungs, from the bottom up.
Qualification thresholds are the published ones as last checked and change most years; confirm the current numbers with China Southern. Alliance equivalences and the lounge rules that follow from them move far more slowly.