Before the Dujiangyan Irrigation System was built in 256 BC. Before this Chengdu Plain always suffer flood in rainy season and drought in dry season.
在都江堰水利工程修建于公元前256年，在这之前，成都平原一到雨季就遭受洪灾，一到春耕季节又没水灌溉。
Before the Dujiangyan Irrigation System was built in 256 BC. Before this Chengdu Plain always suffer flood in rainy season and drought in dry season.
在都江堰水利工程修建于公元前256年，在这之前，成都平原一到雨季就遭受洪灾，一到春耕季节又没水灌溉。
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