Crimson beads are traditional jewelry in China, made of crimson glass. Crimson glass, also known as "Jun porcelain", is one of the five famous porcelains in China. It is named after being produced in Xun County, Nanyang City, Henan Province. Crimson glass is known as "the first enamel in the world" for its unique color and exquisite craftsmanship.

Zhu Jiang first appeared in the Eastern Han Dynasty, when it was a kind of jewelry used to decorate the court and high-ranking people. In the Tang Dynasty, cinnabar beads gradually spread to the people and became an important ornament. In the Ming and Qing Dynasties, crimson pearls became popular between officials and people, and became a symbol of the essence of fashion.

Because the manufacturing process and working procedure of crimson beads are very complicated, and the manufacturing cost of materials is high, the price of crimson beads is also relatively expensive. At the same time, because of its long history and rich cultural connotation, Jiangzhu not only has high collection value, but also is an important witness and research object of traditional culture research.