Read https://tonsky.me/blog/unicode/ today.
Afterwards, I looked over the flag emoji code and found that the 🇪🇺 flag emoji 🇪🇺 is made up of 4 code points, the first 2 code points makes up 🇪 and the last 2 code points make up 🇺. Together, these render as the EU flag on Android, but doesn’t seem to when I copy and pasted “\uD83C\uDDEA\uD83C\uDDFA” without the quotes into my text editor.