This paper explores the categorization of traditional astronomy picture, maps, architectural drawings, mechanical drawings, drawings for agricultural uses.

本文以此文题，讨论了中国古代天文图、地图、建筑图、机械图、耕织图等图学名词的分类及其历史价值。

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Experts say that according to traditional Chinese astronomy, the 5th day of the 5th month in lunar calendar is when the sun reaches its peak position in the year.

专家称，根据传统的中国天文学，农历5月5日，太阳在一年中达到最高点。

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