Infusion of water trapped Make people suffer on the waterfront that day could not have been avoided. While the infusion of water trapped in the canal for a long time without ventilation flow will eventually become polluted water as well. The drainage has led the King's Works . Regarding the circulation of water in the canals by rotation change principles . " Hydration water waste" in conjunction with the principle. " Water only " approach to improve water quality in the canal were better. The system circulates water spin change . The mechanisms of natural phenomena on the principle of water - the water . Control the water level in the canal with the opening - the door of the building water control . To take water from the river in a beat up water into the canal. And drain water to sea water suspension . The flow of water is a natural purification process itself . Because of the addition of oxygen and leaching . In the dirt This helps reduce the waste of water in the canal . Alleviate the suffering of the people for house adjacent waterfront. Reduce the nuisance to passers-by . And help create a beautiful scenery for a special occasion like festival of the year .

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