1、Due to the low temperatures this year, the apricot trees" blooming period has been delayed to Tomb Sweeping Day. 

由于同往年相比，今年气温较低，杏花花期延迟到了清明节前后。

2、China's Tomb Sweeping Day April the fourth or fifth of the solar year ( according to the Gregorian calendar) is a traditional day for the Chinese people to show respect for their ancestors. 

清明节每年公历4月4日（或5日）的清明节，是中国人传统的扫墓祭祖、哀悼先人的纪念日。