C336 change(18)

When Yue Ying came to the living room, Zhou Chengxiang and General Zhao had already waited for the time it takes to make a cup of tea.

The three of them met and exchanged a few polite words before turning the topic to the gunpowder formula.

Yue Ying said, "Now that Qingyang City's situation is urgent, I will not say anymore. Since I have decided to take out the recipe