"Great!" Lu Yanzheng was excited, his eyes shining as he looked at Jiang Qinyu. "Qinqin, you've helped me a lot!"

"Huh?" Jiang Qinyu looked at him blankly. "What kind of help?"

Lu Yanzheng said earnestly, "The military is researching new weapons, but they haven't made any progress and don't know how to maximize their power. Now that you have this, the Ordnance Bureau will definitely be able to develop powerful weapons."

He always knew that they couldn't outnumber the combined forces of Dayuan and Xiqiang, so he could only try to improve their weaponry.

If every border soldier had a wooden gun like this, what would they have to fear even if the enemy attacked the city walls?

Jiang Qinyu hadn't expected such an unexpected turn of events, but since the topic had come up, she casually mentioned, "When you're doing your research, you need to pay attention to the range and the power of the bullets. In addition, you also need to build a bullet workshop to ensure that bullets can be mass-produced and supplied in a timely manner during wartime."

Lu Yanzheng put his hand on her shoulder and said, "Qinqin, thank you. Whether it's the cotton or the wooden gun you gave us, they've been a great help!"

Jiang Qinyu felt a little uncomfortable and chuckled, "Just don't forget to give me my 20% grain tax."

Isn't all she does just to make money?

Lu Yanzheng didn't stay at home for long; he left in a hurry an hour later.

That very night, the enemy prepared to launch an attack.

At the third quarter of the hour of Chou (1-3 AM), the war drums sounded, and the General Who Protects the Nation and the Fifth Prince led their men to a place one mile outside the border city.

The two men, riding on horseback, looked into the distance and saw Lu Yanzheng and Bian Jun standing ramrod straight.

"Strange, aren't they cold?" General Zhenguo frowned.

Many of his soldiers were shivering from the cold; if it weren't for the strict military orders, they would have dropped their weapons and gone to warm themselves by the fire.