Next, Jin Aya gave Qin Yu another science popularization of weapons and the knowledge of human beings to recognize the master.

It's no wonder that Qin Yu doesn't understand, after all, he is only thirty years old, and he has too few things to come into contact with, although he is constantly reading ancient books of Xiuzhen, it is impossible to know everything.

After Jin Aya's explanation, Qin Yu roughly understood this knowledge.

Weapons can also be used to recognize the master of cultivators or demon beasts, but they must be ......

"The tiger descends the mountain, and the whole city welcomes Mr. Qin!" Chapter 781 The arrogant Xun'er is hitting in his hand, please wait a moment,

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