C721 She is my future sister-in-law

Shen Xin practically walked through the entire underground weapons factory as a soldier. The scale here was really big, and all kinds of weapons were in the process of being forged. Shen Xin was flabbergasted at the large scale of this factory, but he also felt unhappiness in his heart. It was obviously her territory, yet she actually built such a huge factory under the ground