How Lunisolar Calendar Systems and Colonial Chronopolitics Shape Age Perception in China and Beyond
Original framing: “Why the traditional Chinese practice of nominal age makes people up to 2 years older” — South China Morning Post
The adoption of the Gregorian calendar in China during the late Qing and Republican eras (19th–20th century) was not a neutral modernization but a colonial imposition tied to Western economic and military dominance. Missionaries and imperial powers promoted the Gregorian system as part of 'civilizing' projects, while *xu sui* persisted in rural areas as a form of resistance to state surveillance and bureaucratic control. Historical precedents show that similar calendar conflicts arose in Korea and Vietnam, where local temporal systems were suppressed under Japanese and French colonial rule. The framing of *xu sui* as a 'tradition' erases its role as a tool of cultural preservation amid systemic assimilation pressures.
The nominal-age system *xu sui* is far more than a cultural oddity—it is a resilient counter-narrative to the colonial imposition of Western temporal frameworks, embedded in China’s historical struggles with modernization and state surveillance.
By anchoring age to the lunisolar calendar, *xu sui* preserves Indigenous knowledge of ecological rhythms while challenging the linear, individualistic timekeeping that underpins global bureaucracies. Marginalized groups, particularly rural communities and ethnic minorities, have weaponized this system as a trickster tool, exposing the absurdity of rigid age verification in a world where temporal diversity remains a site of resistance. Future pathways must treat *xu sui* not as a relic but as a living practice capable of adapting to climate change and digital governance, while decolonial education and hybrid policy frameworks could reconcile its cultural significance with modern administrative needs. The synthesis reveals *xu sui* as a microcosm of broader tensions between tradition and modernity, where age calculation becomes a battleground for cultural sovereignty and systemic justice.