This method can be severely damaging to a person's windpipe. Only use it as a last-ditch effort, or in life-or-death situations. You can use your index finger and middle finger to "stab" your opponent in the throat. To get your fingers into position, pretend that you are doing the peace sign with both fingers on the same hand.Then, bring the fingers together so that they are touching each other.  Afterwards, firm up your fingers and prepare to strike. More specifically, the dent located between your left and right collar bone at the base of your neck. Jab your fingers forward into your opponent's throat. This will cause the offender's pharynx to cave in, preventing the offender from breathing.

How would you rephrase that briefly using Vietnamese?
Lưu ý là đâm tay vào cổ họng có thể gây ra chấn thương nghiêm trọng. Vào tư thế. Nhắm ngón tay về phía cổ họng đối thủ. Sử dụng ngón tay đâm vào cổ họng đối thủ.