Simona sat honestly and sincerely at the desk, with her back straight. Spreading out the papers, she began to write. Nathan was sitting on the sofa opposite to her. He leaned back comfortably, folding his long legs. He held an iPad in his hand, and clicked it from time to time, as if he were reviewing documents. For a moment, he stood up and came up behind her, "Why did you stop? Which one you don't know how to solve?" "Ah..." Simona suddenly became timid and couldn't say a word in half a day. She just peeked at him secretly to see what he was doing. She didn't know this man was so sensitive that he even could notice her with his head down. "Let me see." Nathan bent down, and got one hand on the table. His tall figure overshadowed her. From a certain angle, the pose was ambiguous and

