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"Knock, knock!" The office door was knocked on. Cao Jun pushed the door open and entered. He saw Tong Qing with her bag slung over her back and froze for a moment. "Miss Tong, what are you doing?" "Oh." Tong Qing did not panic at all. "I was about to leave work. What's the matter?" Cao Jun did not expect someone to leave work so brazenly, and for a moment he did not know what to say