为了防止影片被盗录所以我在屏幕中央加入了自制水印，观感可能下降还请见谅，如果需要无水印的话我会上传原片。 In order to prevent the video from being stolen, I added a self-made watermark in the center of the screen. Please forgive me for the appearance loss. If I need no watermark, I will upload the original film.