The next day at noon, Zachary walked out of the library. He stretched his stiff body and walked towards the cafeteria for lunch. All of a sudden, the mobile phone in his pocket rang.
Zachary looked at the caller ID. It was from Mr. Yan. He answered the call, "Hello, Mr. Yan!"
"Zachary, where are you? Come to the laboratory now," Jimmy said.
"Mr. Yan, do I have to come now? I'm about to have lunch now."
"Come here right now!" Jimmy ordered urgently and then hung up the phone.
Zachary was a little unhappy. However, Jimmy was his mentor and Perhaps he really had something urgent to deal with. So Zachary didn't bother about his lunch and rushed to the laboratory.
"You're here!" Jimmy's face revealed a rare smile when he saw Zachary. He pointed to the seat next to him and
