Flower armor put salt water spitting sand fast, salt water can simulate the growth environment of the flower armor, let it open the shell spitting sand, but if only seawater (salt water) soaked flower armor, this spitting sand takes a longer time, placed overnight, if it is a relatively clean flower armor spitting sand if it is about 6 hours can spit clean.

Flower armor that is clams, clams Chaoshan people also called flower arks, which is the development of the Chaoshan region in the last decade of farming varieties. It is the scientific name of the miscellaneous clams, shell nearly ovoid, pointed oval at the front end, blunt oval at the back end, shell surface dark yellowish brown, covered with "human" or fire tongue dark brown pattern, shell surface from the top of the shell to the ventral edge of the fine radial ribs. Inside the shell creamy white, generally more than 2 centimeters high shell, shell width of nearly 4 centimeters.