What is the usage of thousand-day red tea?

Euphorbia Euphorbia contains amino acids, vitamins C, E and various trace elements necessary for human body, and has obvious curative effects on calming the liver and reducing fire, improving eyesight and resolving stagnation, relieving cough and asthma, clearing heart fire and moistening lung, regulating endocrine disorders, relieving depression and reducing fire, enriching blood and invigorating spleen and regulating stomach, dredging meridians, diminishing inflammation and removing spots, especially on chloasma, freckles, liver spots, spots and acne caused by endocrine disorders. When drinking, put the amaranth into the teapot, pour in 1/3 water, shake it gently, and then pour out the water. This is tea washing. Then pour boiling water into the pot, add rock sugar, cover and suffocate for 5 minutes.