Gongju, Fetal Chrysanthemum and Hangju are all different varieties of chrysanthemum, which are also known as yellow chrysanthemum and Luoyang chrysanthemum. Their efficacy and function are somewhat different.

Gongju: bitter and cool in flavor. It has the efficacy of clearing away heat and detoxification, resolving phlegm and relieving cough, and clearing the eyes and dispersing knots. It is suitable for thirst, fever, cough, conjunctivitis, cataract and other symptoms.

Fetal Chrysanthemum: Sweet and slightly cold in flavor. It has the effects of generating fluids and quenching thirst, clearing heat and removing toxins, detoxifying and killing insects. It is suitable for fever and thirst, sore throat, constipation and other symptoms, and can also expel worms.

Hangzhou chrysanthemum: bitter and cool in flavor. It has the effect of clearing away heat and detoxification, resolving phlegm and relieving cough, and facilitating urination. It is suitable for symptoms such as dry mouth and thirst, headache and fever, cough and urinary tract infection.

Overall, Gongju and Hangju have similar efficacy and are mainly used for clearing heat and removing toxins, resolving phlegm and relieving cough. Fetal chrysanthemum, on the other hand, focuses more on the efficacy of generating fluids and quenching thirst, detoxifying and killing insects. Different varieties of chrysanthemum have different therapeutic effects on different diseases, and need to be selected according to specific circumstances.