In ancient times, the saying that "the dragon fights in the wild, its blood is black and yellow" means that when the dragon is snoring, the blood flowing is yellow. The monarch is symbolized by the dragon, and the yellow and the monarch have a more direct connection. In this way, the yellow symbolizes the sacred authority and is inviolable. In the Zhou Dynasty, Huang Wei was the symbol of the power of the emperor. After the Sui Dynasty, the emperor was to wear the yellow robes, and the yellow became the exclusive color of the monarch. The scutellaria in the jade is located above the red carp, closer to the epidermis, and is mainly caused by limonite infiltration to form a "yellow fog." Most of the scutellaria is turbid and opaque, often brown, not enough for yang. The yellow jade is usually heated to form a deep red or bright red hue. Natural high-quality yellow scorpion, also known as "golden jade", is orange or honey color, crystal clear, bright and even, is a top of the yellow scorpion, relatively rare. Coated Nonwoven Fabric,Permeable Non-Woven Fabric,Protective Mask Cloth,Coated Composite Nonwoven Fabric Changzhou Shengqiang Textile Factory , https://www.czsqfz.com