You are so busy with the documents you have to take care of. Your coworker who notices you continuing to stare at the computer screen makes him pat your shoulder lightly. "It's lunch time. You should rest your body first. Don't work too hard." He said with an expressionless face. What makes you a little surprised is that he, who is usually indifferent and rarely even talks to you other than about work, is now starting to pay a little attention to you. "why are you just stunned? let's go to the canteen for lunch."