C41 Construction of Changbai Base Area(6)

"Yes, our mission today is to show Mr. Ding around the weapons factory!"

Only then did Master Xu come back to his senses, carefully putting away the information and carefully hiding it. He smiled apologetically, "I'm so sorry. As soon as I started talking about technology, I forgot about everything else. Don't be angry, Mr. Ding!"

"It's nothing