Chqú is a large marine bivalve, distributed in the Indian Ocean and the western Pacific Ocean. There are only 9 species reported in the world, all of which live in coral reef environment in tropical waters. This animal is also distributed in Taiwan Province Province, Hainan, Xisha Islands and other South China Sea islands. Rhododendron is a rare organic gem, as white as jade, and also a Buddhist sacred object. Manjianghong is the largest marine shell, with a diameter of1.8m. Cuckoo originated in the Han Dynasty, and it is called chequ because there are radial grooves on the shell surface, which resemble ancient ruts. Because it is as hard as stone, later generations added stone characters beside the car canal. Manjianghong, pearl, coral and amber are called the four organic gems in the west, and Buddhism in China is also regarded as one of the seven treasures together with gold, silver, colored glass, agate, coral and pearl. It has the reputation of being the first of the seven treasures of Buddhism and one of the four organic gems in the west, but its utility is more real than its reputation, which has been recorded since ancient times. According to Compendium of Materia Medica, it has the effects of calming the heart and calming the nerves, cooling blood and lowering blood pressure. Long-term wear is beneficial to human body, and has the effects of enhancing immunity, preventing aging, stabilizing heart rhythm and improving insomnia. At the same time, it has extremely high medicinal value: it can cool blood, lower blood pressure and calm the nerves, especially for sore throat and blisters in children. It can protect the body and prolong life, and Tibetan Buddhism regards it as a magical treasure to ward off evil spirits. Taobao natural franchise: Haifu Jewelry Concept Store will answer your questions.