The calculated distance (air line) between Beihuaidian and Xianshuigu is approximately 21 miles respectively 34 kilometers.
By car or train, the actual journey to Xianshuigu is certainly longer, as only the direct route (as the crow flies) between Beihuaidian and Xianshuigu has been calculated here.
Air line (approximately)
34 kilometers
18 nautical miles