La description

There is a masterpiece Weaponry -the Sword of Yue's king Gou Jian , chilly and sharp, after two thousand four hundred years, The decoration is still clear and beautiful , known as "the first sword". 
The sword of Yue's king Gou Jian was unearthed from Jiangling Wang Shan Tomb in ***5 in Hubei province and preserved fine, sword length *5.7 cm. The body was still gleaming, the blade is still sharp. Blade covered with a black diamond pattern, decoration and beautifully carve the smallest at only 0.1 mm. Grid near the sword with two lines of birds at the seal inscription: "Yue Wang Gou Jian Zi Zuo Yong Jian" eight characters. Hilt of the sword is black, both sides of the sword were cast with grid pattern, embedded with turquoise blue glass. The bottom of the hilt rolled out as round hoop-shaped, casting *1 within less than 1 mm wide concentric circles. Yue Gou Jian the system works fine, showing the swordsmith's excellent skills, called China's national treasure.