Tīng dào hǎo xiāoxi, tā shūzhǎnle méitóu, xiào le qǐlái.
Hearing the good news, her brow relaxed and she began to smile.
Tips
usage
眉头 most commonly appears in the phrases 皱眉头 (to frown / knit one's brows) and 舒展眉头 (to relax one's brow). It often signals emotional state — worry, displeasure, or concentration.