C462 I can die for you and your son

Xi Shangyun was focused on the computer, with all sorts of books on the side.

After all, he had been missing five years, and his era was constantly improving. He had to study non-stop to fill the gap in this period of time.

It was already late in the night. He leaned back in his chair, pinched his forehead with his fingers, and gently rubbed it a few times.

Just then