In the lunar calendar, the years are designated by the Heavenly Stems and Earthly Branches.

阴历用干支纪年。

《新英汉大辞典》

Since the Spring Festival is based on the lunar calendar, it comes about a month later than the Western New Year.

因为春节是根据阴历而定的，所以大约比西方的新历新年晚一个月。

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Mid-Autumn Day usually comes on August 15th in the lunar calendar every year.

中秋节通常在每年农历的八月十五。

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It also abandoned the lunar calendar that had been used from ancient times.

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If you mine the newspaper archives for last year, or the year before (well, not exactly, you need for Chinese New Year, which being based on a lunar calendar is a movable feast) you will see many a story about how factories were desperately short of the labour they needed in the big Chinese manufacturing towns.

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