Which LI point lies on the neck at the posterior border of the sternocleidomastoid muscle, 1 cun inferior to LI-18?

• A. LI-16
• B. LI-18
• C. LI-17
• D. LI-12

Answer: (A)

Think about the neck landmarks used for locating LI points. LI-18 sits on the neck along the anterior border of the sternocleidomastoid (near the level of the laryngeal prominence). If you move downward about 1 cun along the same side but toward the posterior border of the SCM, you reach LI-16. This placement—on the posterior border of the SCM, roughly 1 cun below LI-18—is why that point is the correct choice. The other options lie in different regions (LI-17 and LI-12 away from the neck, LI-18 at the anterior border), so they don’t fit the described location.