You can't. Official website, the high-tech college of Xi 'an University of Science and Technology, inquired that the dormitory of the high-tech college of Xi 'an University of Science and Technology would conduct rounds, requiring students to return to the dormitory to go to bed and rest within the specified time. If you can't go back to the dormitory for special reasons, you need to go through the formalities of asking for leave. Failure to do so is illegal and will be punished.