魏晋南北朝
Su calls the Six Dynasties (222–589) the "golden age of whistling". "Xiao" seems to have permeated all strata of Six Dynasties society, and practitioners included persons from almost all walks of life: recluses, hermit-scholars, generals, Buddhist monks, non-Chinese foreigners, women, high society elite, and Daoist priests. "In general, poets, hermits, and people of all types in the Six Dynasties utilized whistling to express a sense of untrammeled individual freedom, or an attitude of disobedience to authority or traditional ceremony, or to dispel suppressed feelings and indignation."