大发大小单双口诀简介：He Zhen looked at it carefully and then said: I heard that there are people in the world who use small bluestones as weapons to hit anywhere within a hundred steps. I didn't believe it in the past, but now I know it.
He Zhen looked at it carefully and then said: I heard that there are people in the world who use small bluestones as weapons to hit anywhere within a hundred steps. I didn't believe it in the past, but now I know it.
