Live Priority Pass lists China Southern Airlines Lounge in Terminal 3S, airside domestic, Level 4 of the satellite area above Gate 560, departing passengers only. Published hours vary by weekday (as early as 02:30, typically into 23:55). Maximum stay is two hours. Children under 2 are free. Luggage storage and massage chairs are listed.

LoungeKey SZX15 uses the same Gate 560 location and a “two hours before first China Southern satellite flight to last China Southern satellite flight” window.

Reach it only after check-in and security in T3 and the people-mover to the satellite. No live DragonPass finder page was found for this Sky Pearl room, so it is not tagged DragonPass.