The scientific career clock in China

In many scientific systems, career stages are loosely associated with age. In China, however, age thresholds are often written directly into the institutional rules that govern research funding, recruitment and talent programmes. Numbers such as 35, 40 and 45 appear frequently across these policies, quietly structuring the timeline of scientific careers. In the broader labour market, this dynamic is often discussed as part of the ‘35-year-old crisis’ (a term used to describe concerns that job prospects and employment stability may decline after the age of 35). For many early-career researchers, these thresholds function less like guidelines and more like deadlines.