A long time ago, floods(洪水)often happened. The food buried(掩埋)the lands and broke the houses. People felt that they were living in danger every day.
The flood really hurt a lot of people, so people began to think about how to solve this problem. At that time, a man named Gun led people to control the food. All he did was to build the dam (坝) to keep the water out of villages.
Nine years later, there were still floods. His son Yu went on controlling the flood. In order to control the flood, Yu didn't return home for thirteen years. In the past thirteen years, he ran everywhere, passing by his home three times. But he never walked into it to have a look. In his opinion, nothing was more important than what he was doing.
Yu learned from the experience of Gun's and came up with a better way to control the flood. Together with many people, he dredged (疏浚) many rivers. So the flood could pass through the rivers and then go into the sea. The flood finally died down and people moved their homes back.