Tongling Grand Canyon is a worthwhile attraction, boasting a diverse landscape including canyons, caves, streams, underground rivers, and waterfalls. The scenery is beautiful, and it's quite cool inside, noticeably cooler than outside, which is very comfortable. After walking a long way, we finally saw the waterfall, which was quite impressive. The best part was the cave beneath the waterfall; the scenery was unique. It's best to bring a disposable raincoat, as it gets very wet inside, like it's raining. I got completely soaked just taking a few photos.
Dongnayu Bay is also decent. The first part is for boat tours; it's a river with clear water typical of subtropical and tropical climates, but there's not much else to see. Further in by land, there are some nice views, making it suitable for rafting, although that activity hasn't been developed yet.