The calculated distance (air line) between Tai Shui Hang and Yuen Long Kau Hui is approximately 13 miles respectively 20 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 Tai Shui Hang and Yuen Long Kau Hui has been calculated here.
Air line (approximately)
20 kilometers
11 nautical miles