Just as Ding Ning eagerly wanted to leave, a man, who held a black briefcase, wore a fitted short-sleeved shirt and black trousers and looked serious, stopped him.
"Hello, are you Doctor Ding Ning?"
"Yes, I am. Who are you?"
Ding Ning looked at him with vigilance, and secretly wondered that this person looked like an official more than someone from a special department.
"This is my business card. I am Xu Minglu, the secretary of Mayor Du."
Xu Minglu showed a smile and politely handed the business card.
"The secretary of the mayor? What does he want from me?"
With his heart pounding rapidly, Ding Ning still took the business card politely and asked in confusion, "I'm wondering what I can do for you?"
"Can I bother you to leave me your phone number? I may need to contact you
