บท 2389: I Think I Have Its Key

"Drink the soup first. Gu San made it for you." Ye Wangchuan blew on the chicken soup and handed it to her. His handsome face was calm as he said, "I don't know this box, but I know the material it was made of. It's polyethylene. This material is usually used on spacecraft or blast shields."

Qiao Nian worriedly took the bowl with one hand. Coupled with the fact that she was holding the box in her left hand, it was even more inconvenient for her to take the bowl containing the chicken soup.

She released the box. Her lowered eyes were obviously a little solemn, making her look like she was deep in thought.

"Did such materials exist 20 years ago?" Qiao Nian asked him as she looked up.

Ye Wangchuan's force in Beijing, the Ninth Branch, long held control of the rare earth business in Beijing and was extremely familiar with these rare materials.