Zhang Lisheng's last sentence sounded like a curse; Xu Naijia could not help but frown after hearing this. "Dr. Zhang, other than being a Father, do you have a part-time job in being an astrologer or a prophet as well? Futile cursing is the most incompetent performance of a man; I hope you have some self respect for yourself."

Zhang Lisheng smiled and suddenly asked, "Dr. Xu, I believe you must not have majored in biology at a university, right?"

"My Ph.D. is in Environmental Science at the University of Cambridge in England, and I've made cross-disciplinary research on biology before. Is there any problem?" Xu Naijia asked.

"Oh, Cambridge! That's a good university, but I guess you haven't gotten a good grasp on biology yet. I'm very confident when it comes to biology!" Zhang Lisheng grinned and sat on the floor before wetting his finger with saliva and drawing a circle on the floor. Pointing to the circle, he suddenly said out of the blue, "A beast at the top of the food chain ofte