Gu Nianzhi had an understanding of German military ranks, so she knew the white background and three stars with a silvery white corolla decoration was the rank of colonel in the army.
The other that only had golden sashes with two silvery white arrows was the rank of sergeant and was probably an underling brought here by the colonel.
Gu Nianzhi glanced at them, then averted her eyes and kept reading on the couch. The colonel walked over with his hands folded behind his back. He reached out to shake her hand before introducing himself in English. "My name is Colonel Als, and I am the Director General of the German Federal Intelligence Service."
Gu Nianzhi looked up slowly and glanced at the proffered hand with no desire to shake it. She replied in English, "I don't know you. You're in the wrong room."