The purity of the solid golden horse flat bracelet cannot be measured by hanging water. Hanging water to measure purity is a common metal detection method, and the purity of precious metals is determined by measuring the change of density. However, this method requires chemical treatment of samples and certain equipment and technology, so it is not suitable for testing the purity of solid golden horse flat bracelet. Pure gold horse flat bracelet is a kind of high-grade jewelry, which is a process of processing precious metals such as gold and silver into bracelets through gold and silver processing technology. Pure gold flat bracelet has a high purity, generally pure gold, that is, the purity is 99.9%. Therefore, this bracelet does not need to be hung with water to measure its purity.