Start / end point of Needle Hill, you could visit the reservoir, Needle Hill / back to city, keep it up~
https://www.hklii.hk/eng/hk/legis/ord/102/
https://droneandslr.com/travel-blog/hong-kong/lower-shing-mun-reservoir-hike/
https://www.alltrails.com/trail/hong-kong/north/lower-shing-mun-reservoir-loop