After an unknown period of time, Tang Yue's eyes became sore. Tears kept flowing as the prolonged staring at the images on the computer was a time-consuming and mentally draining task. Over time, Tang Yue's eyes began to cross.
The number of photos that needed identification went on endlessly. Furthermore, each photo looked almost identical. The only difference between the last photograph and the next one usually came from the label number. Upon zooming into the image, there were only gray pixels. Staring at such images easily resulted in eye and mental fatigue. To ensure that he didn't miss any clues, Tang Yue often shut his eyes to rest them.
