假设你是李华，为促进学生创新能力，你所在的学校将于6月19日下午三点在学校报告厅举办首届“微电影节”。为了把课内外活动更好地结合起来，届时将展出由学生自主拍摄的课本经典名篇的微电影。请根据上述内容写封信给你的外国朋友David，邀请他前来参加。
注意：1.词数100左右。开头和结尾已给出，不计入总词数；

2．可以适当增加细节，以使行文连贯。

参考词汇：微电影节：the Micro-film Festival　报告厅：the Lecture Hall

Dear David,

How are you doing these days?

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                                                                        Yours,

                                                                         Li Hua