Shape and angle: an angle is a sharp edge at the edge or corner of an object, usually consisting of straight line segments, which can be the edge of a plane figure or the edge of a three-dimensional object. And a rhombus is the interior angle of a rhombus, the angle between the four vertices, which is characterized by the fact that all four interior angles are acute and the sum of adjacent interior angles is 360 degrees.

Medicinal value: when the angle is used as medicine, it is sweet in flavor, cool in nature, and belongs to the spleen and stomach meridians, which has the effect of clearing away heat and detoxifying toxins, subduing swellings and relieving pain, and it can be used to treat sore throats, mouth ulcers, swollen and painful gums and other illnesses. When the rhombus is used as medicine, it is sweet and cool in nature, and belongs to the spleen, stomach and kidney meridians, which has the effect of clearing away heat and summer heat, eliminating boredom and thirst, strengthening the spleen and stopping diarrhea, and replenishing the kidneys and benefiting the vital essence, and it can be used to treat summer heat and thirst, diarrhea of spleen deficiency, and lumbago of kidney deficiency, and other diseases.