爷爷今年100岁，全家人齐聚一堂庆祝他的生日。听爷爷讲述他过去的故事，从年轻时的辛苦到现在的幸福生活；老朋友来看他，大家都觉得光阴似箭。故事最后爷爷分享了他健康长寿的秘密。
 
Grandpa turns 100 this year, and the whole family gathers to celebrate his 100th birthday. As he shares stories of his past, from his struggles in youth to his happy life now, everyone marvels at how time flies. Grandpa also reveals his secrets to a long and healthy life, inspiring all.  It is a heartwarming story.
 
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