The calculated distance (air line) between Yangjiang and Yuen Long Kau Hui is approximately 139 miles respectively 223 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 Yangjiang and Yuen Long Kau Hui has been calculated here.
Air line (approximately)
223 kilometers
120 nautical miles