Su Xuan had any secrets, and he told Xiao Jinghan as soon as possible, which made Xiao Jinghan feel very relieved.

"When will this weapon be available?" Xiao Jinghan asked.

"Gunpowder has just been invented, and I need to think carefully about what kind of weapons I want to make. I am afraid that it will take some time for real firearms to come out.

......

Chapter 773 of "Under the Nine Thousand Years Old" is in the middle of the hand, please wait a moment,

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