The calculated distance (air line) between Wah Fu and Hung Shui Kiu is approximately 15 miles respectively 25 kilometers.
By car or train, the actual journey to Hung Shui Kiu is certainly longer, as only the direct route (as the crow flies) between Wah Fu and Hung Shui Kiu has been calculated here.
Air line (approximately)
25 kilometers
13 nautical miles