A very old school is in Shanghai, China. The school is 85 years old. Engineers wanted to move it to another place. Builders wanted to build a business building in the same place.
Engineers put more than 200 robotic legs(机械腿)under the school. The legs moved up and down. They turned around. The building lifted off the ground. It looked like the school was walking.
The school walked 62 meters. The school was very heavy. It weighed 7,600 tons. It took 18 days to move the school. Engineers were happy. It was the biggest work for them to finish. And they did it well.
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