Lau, a Chinese nobleman entrenched in Victorian London’s shadowy underbelly, operates as the British branch manager of Shanghai’s Kong-Rong trading company and a high-ranking Qīng Bāng syndicate official. Tasked by Ciel Phantomhive—the Queen’s overseer of England’s criminal networks—he governs the Oriental quarter, East End, and illicit docks. His striking features include short black hair, perpetually narrowed dark brown eyes, and a serpentine blue dragon tattoo coiled along his left arm. Clad in traditional changshan robes, he conceals his hands within voluminous sleeves that hide a slender needle, touted as an "instrument of oriental medicine" and deployed with lethal precision in combat or healing. Rising to power in 1887 as the Qīng Bāng’s "Rising Dragon of the British Concession," Lau migrated to London under Ciel’s patronage. His demeanor masks shrewd opportunism beneath a veneer of languid charm, artfully feigning ignorance or omniscience to manipulate outcomes. Though outwardly amiable, he champions ruthless pragmatism, dispatching threats via assassination—often through his devoted accomplice Ran-Mao, whom he labels "sister" despite their lack of kinship. A master of anatomy, he incapacitates foes with calculated needle strikes, exemplified by his swift neutralization of Harold West Jeb’s guards. Alliances, for Lau, are transactional; he demands tangible repayment and disdains charity, as seen during collaborations on cases like the Jack the Ripper murders, where his audacious tactics—such as a near-fatal magic trick involving Sebastian—blurred lines between aid and hazard. Navigating conflicts with detached pragmatism, he observes skirmishes from afar before striking decisively, as demonstrated in the Indian Butler Arc. While attending underworld summits to counter threats like narcotics rings, his loyalty remains tethered to mutual advantage. Yet he maintains keen interest in Ciel’s ambitions and London’s criminal flux, hinting at enduring partnerships. Commanding the East End’s opium dens and black markets, Lau adapts effortlessly, openly weighing shifts in enterprise should profits wane. Consistently portrayed across media as a figure balancing geniality and brutality, his narrative stays confined to core manga and anime arcs, with no expanded role in spin-offs or films. His legacy endures as a strategic enigma—a dragon coiled in silk, equally poised to heal or strike.