This house has cornered the market on tea, as well as other luxury beverages like coffee, fine wines, and liqueurs.
Secondary to that, Thoi Li has a large market share in the trading of minor magical items.
Thoi Li is feared by most would-be rival houses because of its small but potent force of sorcerers, warlocks, and wizards. Every major merchant vessel has a spellcaster aboard.
They operate out of Azzazuum.