Meridian Coordinates [best]

LU-5 (Lung 5 – Sea point) is located at the cubital crease of the elbow. Because it is a "Sea" point, it is traditionally used to "drain rebellious Qi" (coughing/vomiting).

In astronomy, the is the great circle passing through the celestial poles and an observer's zenith. When combined with a coordinate system: meridian coordinates

Meridian coordinates can be converted between different systems, such as: LU-5 (Lung 5 – Sea point) is located

Explain how to calculate distance using meridian coordinates. Detail the history of how the Prime Meridian was chosen. Provide a map showing major meridian lines. Let me know how you'd like to ! What is longitude? - NOAA's National Ocean Service meridian coordinates