The calculated distance (air line) between Dongguan and Siu Lek Yuen is approximately 53 miles respectively 85 kilometers.
By car or train, the actual journey to Siu Lek Yuen is certainly longer, as only the direct route (as the crow flies) between Dongguan and Siu Lek Yuen has been calculated here.
Air line (approximately)
85 kilometers
46 nautical miles