Emperor Cheng said again: "King Cheng, I heard that the auction you have the day after tomorrow, there is a technical formula that I am interested in, I wonder if it is the manufacturing technology of this bow and crossbow?" ”

Yang Cheng waved his hand.

Cheng Huang asked: "What kind of technical formula is that?" ”

Yang Cheng shook his head and smiled: "Please also ask the Holy Lord to forgive your sins, I can't tell you for the time being." And you'......

Chapter 151 Yang Cheng doesn't seem to like me I'm hitting with my hand, please wait a moment,

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