"I'm sorry. I shouldn't have let you act alone," Zhang Heng apologized. "I keep feeling that they have their eye on me all the time, which means they'd be attacking me first. Besides, we still have some time left. To my surprise, I didn't expect them to so quickly come up with a plan to attack us at the same time."
"Did they attempt to replace you too?" Bai Qing was still a little frightened, "...in school?"
"Yes. The alien at Workshop No. 3 last night should have hatched by now. Theoretically, it would need some time to learn about our society before replacing me. However, it seems they've run of patience. Early this morning, they attempted to attack and replace me with the fake Zhang Heng."