参考词汇：建国70周年the 70th anniversary of the founding of China
I’m writing to tell you something about the Art Festival which was successfully held in our school.
The Art Festival was held with the aim of celebrating the 70th anniversary of the founding of China. In the festival, a variety of activities were held among students, such as a speech competition and performances with singing and dancing. Besides, there was a grand exhibition on traditional Chinese culture, on which some art works, related pictures and videos were exhibited.
This art festival enables us to know more about traditional Chinese culture and the great achievements our motherland has accomplished during the past seven decades. In the meanwhile, it also inspires us to work hard and make great contributions to our motherland.