Detailed　Asian　summer　monsoon　(ASM)　variability　across　Heinrich　stadials　(HSs)　5　to　2　was　reconstructed　from　four　stalagmite　oxygen　isotopic　(delta　O-18)　records　in　central　and　southern　China.　For　the　last　glacial　period,　these　speleothem　records,　combined　with　previous　cave　records,　reveal　a　rapid　ASM　decline　at　the　onset　of　each　HS.　During　this　time,　ASM　intensity　decreases　immediately　to　the　weakest　level　within　approximately　50years,　which　is　followed　by　a　gradual　intensification　in　the　mid-HS.　Typically,　this　process　of　ASM　weakening　is　synchronous　with　peak　ice-rafted　debris　deposition　and　large　freshwater　outbursts　into　the　North　Atlantic,　implying　a　tight　link　between　the　two.　During　the　Holocene,　however,　a　relatively　gradual　ASM　decrease　occurred　at　the　start　of　the　Bond　events.　Comparatively,　the　ASM　decrease　during　the　Bond　events　is　generally　accomplished　within　110years,　and　the　weakest　ASM　occurs　near　the　end.　This　difference　implicates　a　further　southward　displacement　of　the　Intertropical　Convergence　Zone　and　a　stronger　impact　from　the　Atlantic　meridional　overturning　circulation　on　the　ASM　in　the　early　HS.　Moreover,　contrasting　expressions　of　the　ASM　during　HSs　and　Bond　events　suggest　that　a　fixed　phase　relationship　during　bipolar　climate　changes　cannot　be　expected.　Plain　Language　Summary　The　anatomy　of　internal　structures　in　abrupt　climate　events　under　different　climate　boundaries　is　important　for　understanding　the　physical　mechanisms.　The　delta　O-18　records　from　Chinese　cave　deposits　can　be　used　as　an　indicator　for　Asian　summer　monsoon　(ASM)　variability,　which　is　closely　related　to　changes　of　North　Atlantic　climates　and　shifts　of　the　Intertropical　Convergence　Zone.　In　this　study,　a　comparison　of　delta　O-18　records　from　different　caves　in　China　revealed　that　the　ASM　declined　rapidly　at　the　onset　of　the　Heinrich　events　in　the　last　glacial　period　but　gradually　at　the　onset　of　Bond　events　in　the　Holocene.　This　indicates　that　the　volume　of　freshwater　inputs　into　the　North　Atlantic　during　the　Heinrich　events　was　large,　and　the　southerly　movement　of　the　Intertropical　Convergence　Zone　was　exceptionally　significant.　As　an　atmospheric　bridge　linking　bipolar　climate　changes,　different　expressions　in　ASM　variations　in　the　last　glacial　and　the　Holocene　should　be　considered　when　correlating　northern　and　southern　hemispheric　climate　changes.