CuberSpeed Moyu Guoguan Yuexiao 3x3 Black Magic Cube 3x3x3 Speed Cube Puzzle 100% new & original moyu guoguan yuexiao 3x3 black magic cube 3x3x3 speed cube puzzle. The yuexiao is the first cube from guoguan, a new and exciting brand by moyu. It features an appearance and design similar to that of the cong's design meiying, but with an all-new core design and more rounded edges. The cube turns very well right out of the box, and it has a slightly scratchy feeling to it.