LZ, you download the video of Qiyi on the PC, you can not use any player other than Qiyi player to play, because Qiyi has its own method of protecting intellectual property rights, so you have to remember this problem.
You will download the file in Qiyi through USB transfer to the phone memory card, and then use the Qiyi video Android version to search for the folder where you put the video, you can play it normally.