After Gulang Yu, we stayed in the Overseas Student Dormitory at Xiamen University, which you can get rooms in if they are not all filled up - I highly recommend it, because its in an excellent setting and the rooms are all nice and clean (ours cost 208 yuan a night). We were lucky to be on the side facing the sea and almost at the top of the building, so we had great views. Lea got to catch up with lots of friends and get all nostalgic over the time she used to study here before coming to NZ.
Based there, we visited the Nanputuo Temple near the university entrance. It is a busy Buddhist temple, with a colourful style and paths that go up the hill itīs built on - you can go to the top and get nice views of Xiamen, as well as continue on to the botanical gardens (which you have to pay for).
We had another walk along the beach, this time along a new(ish) boardwalk that runs for kilometers around the shore, linking beaches, parks and cliffs. I had a nice walk around the campus one evening, as there is a path going up the hill behind uni to a reservoir set in the forest - a little track runs around it and there's a chance to spot lots of different birds and other animals.
On our last night in Xiamen, we stayed with another of Leaīs friends who lived at the top of a 30 floor apartment building (quite luxurious too!) and had more awesome views of the city from its northern end near Yuandang Lake (which is actually an estuary). The next day we were off to Hong Kong by bus!