Luo Ziling returned to Lin Lan's room just as Lin Lan was waking up.
It couldn't exactly be said that it was "just as". Lin Lan's bodily functions were recovering well, and her vigilance had greatly increased. Luo Ziling's noise of opening the door startled her awake.
Seeing Luo Ziling's return, Lin Lan smiled gently and then closed her eyes again.
Just waking up and then closing your eyes for a bit more rest could feel more comfortable.