Unable to answer "What surface does this path have here?" for https://osm.org/way/789945135 via StreetComplete 31.3:

这里是用碎石、油漆和塑胶等铺就并平整过的运动小道，主要供自行车和步行
Special sports track made with gravel, paint and plastic, for cycling and walking

Attached photo(s):
https://westnordost.de/p/39392.jpg
https://westnordost.de/p/39393.jpg