Mayu Island sits in Shantou Bay near the harbour mouth, close enough to the city for an easy half-day but separate enough to feel like a small coastal detour. Temples, sea walls, fishing views, and breezes are the attraction.
It is a good choice when you want a break from traffic without committing to the longer trip to Nan'ao. Go for a walk, look back at the bridge and harbour, and let the city recede for an hour or two.