The director's expression changed completely. He stared at Zhao Hai for a long time before he said, " "What do you mean by that?"
Zhao Hai looked at the director and pointed to the ground. There was some dust on the ground, but there was nothing special about it. The only special thing was that there was a spot where the dust was thicker. This made the color of the dust there look completely different from the other spots.
When the director saw the dust, his expression changed. He looked at Zhao Hai but did not say anything. It was obvious that he would not tell him what the dust was.
