Pinellia(Ban Xia) is a type of traditional Chinese medicine, which has the effects of clearing heat and resolving phlegm, relieving chest congestion and cough, reducing vomiting, and stopping bleeding. 
1) Clearing heat and resolving phlegm: Pinellia can clear heat and resolve phlegm, providing effective relief for symptoms such as chest tightness, cough, and excessive phlegm.
2) Expanding the chest and descending rebellious Qi: Pinellia also has a good relieving effect on symptoms such as indigestion, abdominal distension, and vomiting.
3) Stopping bleeding: Pinellia has the function of constricting and stopping bleeding, and can be used in the treatment of certain bleeding disorders.
It should be noted that when using Ban Xia, it is necessary to use it in a reasonable dosage according to the specific condition and the advice of a doctor. Pregnant women and children should also use it under medical advice.