Spear of the Night by Kit Sun Cheah
Saga of the Swordbreaker book 3 Spoilers ahead for earlier books
Li Ming is carrying out a body guard job as part of the company, in another country, when a terrorist strikes. The infamous and enormously powerful Night Spear.
Complications pile up. The fallen Yue empire, their being prevented from leaving by a police investigation, continuing questions about a technique that a friend uses and its dangers, intrigue for which they are ill-suited, an apparently well meant attempt to blow their cover, discussions of poverty, and more.