Portal:China/Did you know/2

...that director Zhang Yuan's 1999 film, Seventeen Years was the first Chinese film allowed to film inside a Chinese prison?
...that in 132 CE, Zhang Heng, a Chinese court astronomer during the Han Dynasty, produced a seismometer (pictured) with an inverted pendulum that indicated the direction of earthquakes that occurred hundreds of kilometers away?
...that the oil spill which spread from the Wei River to the Yellow River was ultimately contained in the Sanmenxia reservoir?

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