Li Guanyi paid no attention to the incessant knocking sound.
However, the person knocking this time seemed to lack patience.
The screeching sound was somewhat grating. Li Guanyi turned his head and saw a thick piece of refined steel being pushed aside as if it were dough, and then a figure burst through the still narrow gap, landing on the ground like a gray shadow.
Of medium height, with a spirited brow, though aged, one could still see that he was quite handsome in his youth. He winked at Li Guanyi; it was none other than the martial arts enthusiast from the Chen Kingdom, Chen Chengbi.
Li Guanyi was surprised and said, “Old Senior Chen?”
“Shh! Shh!”
“Don’t speak, kid.”
Chen Chengbi gestured for Li Guanyi to be quiet and casually pushed the refined steel back into place.
The ease with which he did this was simpler than a mischievous child molding clay.
Li Guanyi's eyelids twitched. This was the palace, a place where the Golden Armored Guards, the emperor's elite troops, kept their records, and the confidentiality level was very high. The refined steel on the window was called Yuyushen Steel.