X and Y were both top students in the computing department. It was a coincidence that they entered the Xueyu unit. When they were young, they entered websites that they shouldn't have. In the end, they were targeted. From then on, they walked out of school and were thrown into the mountains. Half a year later, they reintegrated into society like savages.
After that, they held hands and ran on the path of the military. After a few years, they became unyielding special forces soldiers.
Being a special forces soldier didn't mean that their 'craftsmanship' was wasted. On the contrary, their craftsmanship became more and more proficient year by year. There was nothing they couldn't do.