That is Ziwei Palace, the name of the star. In ancient times, it was believed to be the seat of the Emperor of Heaven. The point is close to the heart and related to the heart, hence its name.

[Location]

Zigong (CV19) acupoint
(quoted from "Meridians and Acupoints")

• Zhenjiu Jiayi Jing: "In the next six-point trap of Huagai (CV20)."

[Anatomy]

• Muscles: Superficial muscles have a thin membrane and almost no fat.
• Nerve: medial branch of the anterior cutaneous branch of the second intercostal space.
• Blood vessels: anterior perforators of arteries and veins within the thoracic cage (breast).

[Manipulation]

Subcutaneous insertion 0.3~0.5 inches. moxa cone moxibustion 3 to 5 times, moxa stick warm moxibustion for 15 to 20 minutes.

[Efficacy]

Broad chest, lower inverse position.

• Classical: chest hypochondriac pain, irritability, fluid retention, inability to eat, vomiting, asthma, pharyngitis.
• Modern: Pharyngitis, tracheitis, costochondritis.

[Recipe]

• cough: Zigong (CV19), Yutang (CV18), Taixi (KI3).
• Full thoracic and costal branches: Zigong (CV19), Zhongting (CV16), Yongquan (KI1).
• fluid retention: Zigong (CV19), Zhongting (CV16), Danshu (BL19).