C309 Scanty clues(1)

Shen's hands were casually in his pockets as he looked at the postmodernist architecture in front of him, as well as the men and women in various professional suits, carrying bags and papers as they hurried to and fro in front of the building. He pursed his lips and walked towards the door with determined steps.

Out of the corner of his eye, someone was observing him openly or sneakily