Author Post
The Hand of the Sea Krait is a fairly large and influential cell of the Serpent's Hand that's active in the Indo-Pacific. The Hand can get around by using Ways; the Jailors and Bookburners have to rely on predictable, easily observable planes and boats. Internet penetration is also (relatively) low, and I imagine the Hand's enemies depend a lot on Internet data scraping to spy. Naturally, this lets the Hand thrive there.
The image of the cavern is from Wikipedia.
My thanks to A Random Day for extensive critique and
Tsercele for advice on the images.