: agate longnu lines fast brand6 cm long, 4.3 cm wide, 0.8 cm thick, heavy 54 gAgate as the materials, to extract the ancient opportunely, square shape.Longnu grain carving, the center square box side book "fast" two characters, one book "fast" in manchu language preserved in the word, means a sacrifice when kick the uprightness in devotion.Depicting stiffness strong, lasting appeal is dye-in-the-wood, knife work succinct, handsome pale xiu, wear market.