The calculated distance (air line) between Huizhou and Yuen Long Kau Hui is approximately 52 miles respectively 83 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 Huizhou and Yuen Long Kau Hui has been calculated here.
Air line (approximately)
83 kilometers
45 nautical miles