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prolong the Han state's existence by doing this, at the same time I am also helping the Qin state make a great achievement worthy of history." The Qin state agreed and ordered him to finish building the canal. Once completed, the canal and its irrigation works largely boosted agricultural productivity in the Qin state.
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in western China was making aggressive advances towards the other six major states in the east. The Han state, which shared borders with the Qin state, heard that the Qin state liked to carry out large-scale construction works and projects, so they sent Zheng Guo to persuade the Qin state to build a
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During the construction phase, the Qin state discovered Zheng Guo's ulterior motive in asking them to build the canal, and wanted to execute him. However, Zheng Guo said, "I started as a spy working for the Han state, but once the canal is built, it is beneficial to the Qin state. Although I can
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plain and boost agricultural productivity. The plan was actually meant to distract the Qin state and keep it busy, so as to prevent it from attacking the other states.
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third century BCE) was a
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