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Chapter 155

Although Professor Lee used to be not young, he was in good spirits. He didn't look like an old man in his sixties and seventies at all, but like a middle-aged man in his fifties.

 

This is because he is well maintained, but now Professor Lee is a little tired, and looking like he is several years old.

 

Allen Peterson wondered what happened to Professor Lee and why he looked so old.

 

However, he didn't ask directly, but exchanged pleasantries with Professor Lee. After the three people entered the private room, he couldn't help but speak out his heart.

 

"Professor Lee, I don't know what research you are doing recently. I don't think your look good!" Allen Peterson sinking track.

 

Professor Lee smiled bitterly: "You also found that, speaking of it, I have spent more energy recently than I spent in the previous year!"

 

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