u've dropped them."Sanbao smiled and respectfully said, "the maidservant knows."nodded, and Li Chen left the hall with great strides.and at this time, in a residential house on the outskirts of the ca...d about the saltpeter mine, Suo Antu curled his mouth and thought that Prince Qin was too whimsical.everyone knows that saltpeter is used to make gunpowder.before, gunpowder did not play an important...