One possible version
ZhangHeng ,a famous astronomer in the Han Dynasty in ancient China, was born in 78AD in Nanyang County in Henan Province. He made great achievements in literature, for he collected many folk stories in his books and described the development of the cities and the people’s living conditions at that time. Besides, he also advised the governors to reduce the burden of the peasants and to improve the agricultural conditions, leading to the improvement of agriculture and people’s living standard.
One of his best known inventions was the seismograph, which once accurately forecasted the earthquake in Gansu Province. It was the first machine to forecast earthquakes in the world, which made great contributions to the study of the disasters. He was so great a man that he will be remembered not only by the Chinese people but also by the world for ever.
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