Good mornin everyone. I am glad to meet you again here,Since November 18, 2015 I have released the first paper plane "Long Sky",18 days later I brought the second paper plane independently developed by me,Its name is"Welkin".Next to today's tutorial, I wish you a pleasant look.（大家早上好。很高兴在这里又和各位再次见面，自二零一五年十一月十八日我发布第一架纸飞机“长空”，时隔18天我带来了由我自主研制的第二架纸飞机，它的名字叫做“苍穹”，接下来进入今天的教程时间，在此预祝各位看的愉快。）
