I am playing Yeti this time, event starts 15th March 2023, ends 19th April 2023 before patch.
Here the NPCs and maps, hope help you.
Stan's Letter to Yeti 1:
A pirate master - Kyrin of Nautilus Navigation Room
A wise master who researches forgotten knowledges - Lirin of Rien
An oldest and wisest magic master - Alcaster of El Nath
Stan's Letter to Yeti 2:
1st Photo - Direction Signboard of El Nath
