Chen Liang shook his head too.
"That's what we haven't been able to figure out either! Going by her account, it's quite possible that she left the hospital, walked over there in a daze, and got swept inside by the crowd. Then she realized she wasn't in the mood to attend a lecture and immediately left! Judging by the timing, Professor Du hadn't even appeared yet when she walked out!"
Song Ning also felt there was no better explanation.
Her pen traced unconscious circles on the paper...
Just what sort of mystery had this young woman left behind?
Just then, someone knocked on the door.
Then Zheng Chang'an's voice came from outside. "Ning! Are you in?"
Song Ning gathered her thoughts and answered, "Come in!"
Zheng Chang'an and Jiang Chengshi entered one after the other.
Looking at Chen Liang and Han Xiao, Zheng Chang'an asked, "Um... are we interrupting?"
"Not at all!" Song Ning said. "Come in and sit down! I could use a change of pace!"
Chen Liang nodded to Song Ning. "I'll leave you to it! I'll follow up on the relevant details!"
He gathered the documents on the desk, turned, and left.
Han Xiao also said, "I'll step outside for some air! I'll be right by the door!"
Both men knew when to give people space. Zheng Chang'an and Jiang Chengshi were trusted colleagues, and with Han Xiao out of the room, it would be easier for them to discuss work.
He only needed to stand guard at the door.
First, Zheng Chang'an picked up the teapot from the coffee table, poured a cup each for himself and Lao Jiang, and drained his in one gulp.
Only then did he pull a stack of documents from his briefcase.
"Ning! Besides Sanhuan, the first factory we visited-oh! They've