Flying novel was an online reading software that could restrict the user's browsing range by locking the direction. Specifically, the direction lock function allowed the user to only read the topic or chapter of their choice and avoid reading other content. It was very easy to lock onto the direction of a fly-reading novel. First, the user had to choose the topic or chapter they wanted to read and save it in the "To read" list. The user could then select the 'lock direction' option on the reading interface to limit the browsing range to the saved topic or chapter. Once the user chooses the direction to lock in, they can only read the selected topic or chapter without worrying about reading other content. If you need to change the direction of the lock, you just need to choose again. The direction locking function of the fly-reading novel could help users focus on the topic or chapter of their choice to improve reading efficiency.