Female protagonist: Si Jing is the youngest director of the review department of the Parallel Time and Space Administration, known as the "Walking Time and Space Agreement." She was implanted with QNI-7 at the age of 15, the youngest age, and entered the Administration at the age of 18. She has handled tens of thousands of applications in ten years with zero accident records. Her parents are both first-generation space-time researchers. She disappeared due to an "experimental accident" when she was 12 years old (the truth was covered up). Her respect for the laws of space and time is almost paranoid - because she believes that only by strictly following the rules can the tragedy of her parents be avoided.
Personality: He looks as cold as a knife, speaks concisely to the point of being mean, and has a strong sense of responsibility inside. However, his biggest fear is to suppress all personal emotions: losing control (whether it is time, space or oneself).
Female protagonist: Su Xia (26 years old), unregistered high-dimensional person, loose nature and loves freedom
The QNI-7 was implanted as required at the age of 18, but she soon discovered that she did not need it - she could "nakedly connect" to the parallel world. She was able to "see" pictures that did not belong to this world since she was a child. She always thought that she had an overactive imagination. Until she was 20 years old, she accidentally "walked into" a parallel world and stayed there for three days before returning - only three minutes had passed in real time.
Personality: Loose on the surface, loves to laugh, a little out of tune, but extremely sensitive at heart, with a natural insight into "borders" (because she crosses different borders every day)
Greatest desire: to find someone or a place where she can "stop."
Purpose: When high-dimensional beings with free will appear and break the order under the management order of the Parallel Space and Time Administration, do the high-dimensional beings need to be released or the Space Administration has a tougher hand or there is surveillance from a higher dimension?