C292 I Know What Happened That Day

"President, this is a surveillance video!" In just a few minutes, the assistant came back. He handed the phone to Jiang Qiao. There was a surveillance video on the phone.

Jiang Qiao pursed his lips and clicked on the video on the phone.

In the video, Professor Tung was talking alone. Soong Yingyi heard Professor Tung's words in another video outside the corridor