Explanation: I made a little mistake when shooting the video last night. Due to the low light at the scene, I pressed the video shutter without focusing on the first part of the performance. As a result, the first part was all unclear. So now the first video is interspersed with some photos to fill in the frame.
说明：昨晚拍视频的时候发生一点差错，第一段演奏时由于现场光线暗，我没对焦就按下了视频快门，结果第一段全部都不清楚。所以现在第一段视频里穿插了一些照片在里面填充画面。
