Navel — regulation hinge
trunk coordination and breath rhythm
The navel is a separate visual hinge for trunk coordination and breath rhythm, allowing the renderer to distinguish it from the broader lower-abdominal centre. This distinction is an editorial map choice, not a claim of two universally named Vietnamese energy points.
Point 5 of 7 in Vietnamese Khí Công
Cross-tradition overlaps
No overlapping points are registered for this point.
Sources
Vietnamese traditional medicine scholarship on khí, dưỡng sinh, and body practice (scholarly_modern)
Ngô Gia Hy, Bùi Lưu Yêm, and Ngô Gia Lương, Khí Công Học Và Y Học Hiện Đại (secondary)