> For the complete documentation index, see [llms.txt](https://btehkmu.gitbook.io/btehkmu-zhi-nan-guide-book/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://btehkmu.gitbook.io/btehkmu-zhi-nan-guide-book/guide-book-en/getting-started/building-basics/profile/coordinate-system.md).

# Coordinate System

Longitude & Latitude is a method of representing any location on Earth using numeric coordinates. Longitude indicates east-west position, latitude indicates north-south position, and together they precisely locate a point on the surface.

<figure><img src="https://2481641337-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FiCsqZvQt6N8bYG3CEYIb%2Fuploads%2Fww5UXmcYilO7GHfFhFxX%2Fimage.png?alt=media&amp;token=d6fa0beb-907b-4815-97d6-63faa1a0c5ef" alt="" width="375"><figcaption><p>Illustration</p></figcaption></figure>

{% hint style="warning" %}
**Of course you don't need to remember all this messy stuff! Just take a look\~**
{% endhint %}