The calculated distance (air line) between Yau Yat Tsuen and Dongguan is approximately 55 miles respectively 88 kilometers.
By car or train, the actual journey to Dongguan is certainly longer, as only the direct route (as the crow flies) between Yau Yat Tsuen and Dongguan has been calculated here.
Air line (approximately)
88 kilometers
47 nautical miles