A proverb says that "Saint Valentine brings the keys of roots". Plants and flowers start to grow on this day. Birds also marry on Valentines day.

有谚语说“圣瓦伦丁带来了根的钥匙。”植物和花卉在这一天开始生长。鸟雀也在这一天求偶婚配。

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After his death, Valentine was made a saint, and the day of his death was named Valentine's day.

死后，瓦伦汀被看作是圣徒，他去世的那一天被命名为情人节。

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As a result,in nineteen sixty-nine, the church removed Saint Valentine's Day from its official worldwide calendar of Catholic feasts.

VOA: special.2010.02.08

Valentine's Day is a saint's day.

BBC: How much Christianity is hidden in British society?