The calculated distance (air line) between Kau Wa Keng and Yuen Long Kau Hui is approximately 10 miles respectively 16 kilometers.
By car or train, the actual journey to Yuen Long Kau Hui is certainly longer, as only the direct route (as the crow flies) between Kau Wa Keng and Yuen Long Kau Hui has been calculated here.
Air line (approximately)
16 kilometers
8 nautical miles