(abbreviation) the Four Modernizations of agriculture, industry, national defense, and science and technology, a policy initiated by Deng Xiaoping.
four criteria for officials
(abbreviation) the four criteria for selecting government officials: being more revolutionary, younger, better educated (年轻化niánqīnghuà and related slogans), and more professionally competent (专业化zhuānyèhuà)
four digital processes
(of Chinese characters) the processes of standardizing, systematizing, specializing, and quantifying
