Tangerine peel and green tea can be brewed together:

This is not harmful. Tangerine peel has a bitter taste and warm nature. It has the effects of warming the stomach, dispersing cold, regulating qi and strengthening the spleen. It is suitable for people with symptoms such as stomach fullness, indigestion, loss of appetite, cough and phlegm. Green tea has a refreshing effect. Drinking it together regularly can regulate coughs and the spleen and stomach. However, it is not suitable to drink if you have a cold stomach.