Introduction to artificial water canals: The streams in the town are artificially dug and run through the small bridges in the ancient town, creating the fluidity of flowing water on small bridges in the south of the Yangtze River. There are mostly merchant houses with stone counters along the river. In the houses, local old people sit in twos and threes on the bridge and chat. This is the leisurely, settled, vicissitudes and indifferent life in Tunpu.