增加岁数，延长寿命。
战国楚·宋玉《高唐赋》九窍通郁，精神察滞，延年益寿千万岁。”
服肉芝～。★清·李汝珍《镜花缘》第九回
Learn the next connected idiom: 延年益寿 (yán nián yì shòu) → 寿终正寝 (shòu zhōng zhèng qǐn)
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