Video 1. High Mountain and Flowing Water performed on the guzheng by Xiang SiHua (2000) Source.
Video 2. Suwu herding sheep performed on the erhu by Song Fei (2017) Source.
Video 3. Ambush from ten sides performed on the pipa by Jiaju Shen (2017) Source.
Video 4. White snow in sunny spring performed on the pipa by Liu Dehai. Source.
Video 5. Dance of the Yi People performed on the pipa by Liu Dehai. Source.
Video 6. Wang Jin beats Gao Qiu theme music from The Water Margin featuring a suona solo. Source.
This is a good place to start your journey, though it misses a lot, and some songs are not as memorable as others, there is huge variability in that list.
Video 1. The Ten Most Famous Melodies in Ancient China. Source. A single video with a collage of all ten songs.