在颈前部，横平甲状软骨上缘，胸锁乳突肌的后缘。

注1：头部抗阻力转向对侧时胸锁乳突肌显露更明显。

注2：本穴与人迎(ST9)、扶突(LI18)均横平甲状软骨上缘(喉结)，三者的位置关系为：胸锁乳突肌前缘处为人迎(ST9)，后缘为天窗(SI16)，前后缘中间为扶突(LI18)。

In the anterior region of the neck, posterior to the sternocleidomastoid muscle, at the same level as the superior border of the thyroid cartilage.

Note 1: The sternocleidomastoid muscle is more distinct when the head is turned to the opposite side against resistance.

Note 2: SI16 is located at the same level as ST9, LI18 and the superior border of the thyroid cartilage. ST9 is located anterior to the sternocleidomastoid muscle, SI16, posterior to the sternocleidomastoid muscle and LI18, midway between the anterior and posterior borders of the sternocleidomastoid muscle.

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