A couple of doctoral students from the University of Traditional Chinese Medicine are getting married. The boy's surname is Long and the girl's surname is Chen. The two newcomers asked their tutor to write couplets for them, but the tutor didn't shirk. Combined with their major, the tutor wrote a couplet: a keel to clear away heat and relieve itching, to promote fluid production and quench thirst; The second part: two pieces of dried tangerine peel, to reduce swelling, quench thirst and resolve phlegm. Horizontal batch: valid for one day. After reading it, the students cried in surprise: absolutely! It's amazing!