If you don’t have enough IQ, you can make up for it with your looks

Eiland could see that the ninja he was stepping on was of higher seniority among these ninjas, so he left him alive.
He looked down at the ninja and asked, "Are you from the Wu Teng family?"
"You, how did you know?" the ninja asked in surprise, but after being surprised, he quickly closed his mouth. Isn't this just confessing himself?
"You're a Chunin?"
"How do you know... um..."
The ninja quickly shut up again. He didn't want to answer Eiland, but every word Eiland said was beyond...