First of all, you can find videos and music of simplified Tai Ji Chuan on Baidu or China Tai Ji Chuan, and download them directly to your mobile phone according to the video and audio download tips. Each website has its own video download tool, so the website you are looking for to download videos is the same as your mobile phone installation download tool. If it is not the same website, it is best not to download it. You can also do this, download it from your computer and copy it to your mobile phone. Connect the phone to the computer with the charging cable of the phone. The computer prompts you to install three files to connect your mobile phone. After installation, you can copy the video and music MP3 you need to your mobile phone. If you don't want to install the connection file with the mobile phone on the computer, there is another way to connect the mobile phone memory card to the computer with a card reader and copy the file to the mobile phone memory card. Music (preferably MP3) is easy to download to your mobile phone.