Seeing this, Rong Xingyu and Ye Shiyuan could not help exchanging a glance and then they spoke at the same time.
"Professor Jiang!"
That was right. According to Pan Yinhu, he really had been called away by Professor Jiang to help with something that day and had not been in the laboratory.
It seemed that Pan Yinhu had not been lying.
Rong Xingyu felt as if a heavy weight had finally been lifted from his heart.
Because Rong Xingyu truly did not want to associate someone like Pan Yinhu who usually reminded them of attendance times and even took the initiative to help clean the dorm with something like this.
Rong Xingyu steadied his thoughts and then continued looking further back.
When Pan Yinhu left, he was probably in too much of a hurry.
He had only turned off the lights in the laboratory and the door had simply been pulled shut.
More than ten minutes passed after Pan Yinhu left before the surveillance footage finally changed again.
