Spring festival is the most important traditional festival.

春节是最重要的传统节日。

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Spring festival is the most important traditional festival in China.

在中国，春节是最重要的传统节日。

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Chinese New year, also called the Spring festival, is the most important traditional festival in China.

中国新年是中国最重要的传统节日，在中国也被称为春节。

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But we should not lose sight of the fact that these are traditional celebrations around a great religious festival, one of the most important in the Christian year.

BBC: The full text of the Queen's Christmas broadcast.