The tidal river network area of the Pearl River Delta uses the ebb-and-flow differences between tidal level of the outer river and water level of the inland river to divert clear water for regulation. This is an effective way to improve the water environment of the tidal river network. The central ditch of Hengqin New District is in the tidal river network area of the Pearl River Delta. https://www.roneverhart.com/Precis-Vodka/