alled Shuixi-vran calcium stone blue by the Tangmen, and it is extracted from a type of mineral. 。It is inherently corrosion-resistant and can also increase the hardness of metals. 。Some mechs also c...would be overlooked because it blends in too well with the surrounding mountains. 。But when they stepped into the stone house, they discovered a hidden paradise. 。Behind the stone house, you enter dir...