China food news media has always called Zhang, because the operator's surname is Zhang. Because somebody else Zhang Dalei, the operator of China Food News Financial Media. China Food News often invites experts from specific industries to explain rumors about food, and these experts are perfect for questioners. The greeting of the operator is always "Hello, Teacher Zhang", so the video of "China Food News" often shows a barrage of ridicule. Therefore, China food news media has always been called Zhang, because the operator's surname is Zhang.