Unearthed in Huixia County of Central China's Henan Province in 1950, the iron hoe is 10 centimeters long, 10.5 centimeters wide, and 2 centimeters tall. It was used during the Warring States Period (475-221BC) and is currently collected in the National Museum of China. The hoe's structure is very rational, with a right handle that makes it very easy to use. Not only could it be used to hoe the weeds, but also to preserve the soil moisture, demonstrating a great breakthrough in agricultural technology at the time.

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