What is the function of the Haiquan point

The function of Haiquan acupoint is to treat vomiting, eructation, swelling of the tongue, slowing down of the tongue without retracting it, sore throat, diarrhea and so on.
Haiquan point belongs to the meridian and external qi points, located under the tongue in the oral cavity, roll the tongue up, at the midpoint of the central ligament under the tongue, it has the efficacy of clearing heat and removing toxins, subduing swelling and opening up the orifices, descending the rebelliousness and stopping vomiting, it is used for treating vomiting, eructation, swelling of the tongue, tongue slowing down and not withdrawing, swelling and pain in the throat, diarrhea, abdominal pain, hyperthermia, and consumptive-thirst (disease characterized by drinking, eating and urinating too much, emaciation of the body or urine having a sweet taste), and so on.
Clinical applications of this point include: with Juquan acupoint for the treatment of hiccups; with Tianshu acupoint, Guilai acupoint and Stomach Yu acupoint for the treatment of hiccups and diarrhea; with Fengchi acupoint, Xiaguan acupoint, Laogong acupoint and Cheche acupoint for the treatment of swelling of the tongue and tongue slowing down and not retracting; and with Hepatoyu, Kidney Yu and Lianquan acupoints for the treatment of consumptive thirst.
If you need acupuncture treatment at Haiquan acupoint, you should operate under the guidance of a professional doctor, and should not operate blindly on your own to avoid risks.