Known as the 'Qing Sword', it is one of the representatives of ancient Chinese cold weapons. Not only sharp and practical, but also exquisitely crafted, with high artistic and historical value. There are various types, including official swords, folk swords, etc. Among them, official swords embody the ultimate craftsmanship of that time. There are various shapes, and the sword body is usually slender and straight. During the Qianlong period, the imperial "Heaven, Earth, and Man" series of swords were the pinnacle of craftsmanship. These swords were not only used in actual combat, but also as symbols and ceremonial items of the royal family. The design and production of Qing Jian integrated the influence of Chinese and foreign cultures at that time, and is a witness to cultural exchange between China and foreign countries.