Because you have downloaded the cache on your mobile phone or computer, you can continue to watch it after it is removed, because what you cache belongs to local files, and you can watch it even if you don't open the network.

Youku is a video platform founded by Gu Yongqiang on June 2 1 2006, and officially launched on February 2 1 2006. Youku is now one of the core businesses of Alibaba Group's digital media and entertainment business, and also a part of Alibaba Group's "double H" strategy.

Youku now supports three major terminals: PC, TV and mobile, and has a variety of content forms such as copyright, co-production, self-made, user-generated content (UGC), professional-generated content (PGC) and live broadcast. Youku's daily average paying users grew healthily, with a year-on-year increase of more than 50% as of March 3, 2020.