Amanzi ayisiphephelo esikhulu kubabili abaningi. Hlukanisa izindawo zokuphatha izinto, noma izindawo zokufaka amanzi; zonke zidinga amanzi ukuze zisebenze kahle. Kodwa ngamanye amaxesha, amanzi anabantu abanobuthakathi obuzimekile. Le nto yisibonelo sika-Dinghui, ngezinhlelo zokusebenza eziyisithembiso esizimekile sokulungisa amanzi. Lezi zinhlelo zokusebenza ziyinkomo zezinhlelo zokusebenza zokusebenza kubabili, zinokuvikela ukuthi zonke zisebenze kahle futhi zisaveka imali ngemva kwalokho. Zibhakilwe ngokukhulu futhi ngokweminye, zibhekene nezinkinga ezikhulu futhi ziqhubeka ngokudala. Sizazi ukuthi kulokho okuhlanganisa, ikakhulu ekuphathweni, izinhlelo zokusebenza eziphambili ziyisiphephelo. Lokho-ke yisibonelo sika-Dinghui sokuthi isisifunda sesilwane ungazibheka ngosuku ngosuku. Azi zinhlelo zokusebenza kuphela; ziyiziphumo ezinokusiza ubabili ukuthi zihlale kahle ngokulungisa amanzi okuphambili.