Celestial Bane could only be watched in cinemas because the movie version of Celestial Bane had not been released in cinemas yet. However, if you want to watch the movie on your mobile phone, you can try to use some online video platforms such as QQ, Youku, and iQiyi to search for the movie and choose the way to watch it. However, it should be noted that these online video platforms may not have official authorization to watch. They may encounter copyright issues. It is recommended to choose a regular cinema to watch or buy genuine video products.