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Tree Planting Day is on March 12th. On that day, people all over China will plant trees. Why are so many people planting trees on that day? To improve(改善) our polluted(被污染了的) environment(环境), of course. In Chinese history, Sun Yat-sen (孙中山) was the first man to advocate(提倡) the importance(重要性) of planting trees. Our great Democrat Sun Yat-sen passed away(逝世)on the day. In February 1979, Chinese government decided March 12 to be national tree planting day to commemorate Sun Yat-sen.
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