▁war l ord ▁Z hang ▁Lu ▁in ▁H anz h ong ▁for ▁a ▁short ▁period ▁of ▁time . ▁Ma ▁Ch ao ▁later ▁defect ed ▁to ▁another ▁war l ord ▁Li u ▁Bei , ▁and ▁Ma ▁D ai ▁accompanied ▁him . ▁Ma ▁D ai ▁served ▁under ▁Li u ▁Bei ▁and ▁later ▁in ▁the ▁state ▁of ▁Sh u ▁Han ▁( f ounded ▁by ▁Li u ▁Bei ). ▁ ▁Not ▁much ▁information ▁on ▁Ma ▁D ai ▁is ▁found ▁in ▁historical ▁records . ▁It ▁is ▁known ▁that ▁in ▁ 2 3 4 , ▁he ▁participated ▁in ▁the ▁fifth ▁Northern ▁Ex ped ition ▁led ▁by ▁Sh u ' s ▁ch an cell or ▁Zh uge ▁Li ang ▁to ▁attack ▁the ▁Sh u ' s ▁rival ▁state ▁C ao ▁Wei . ▁Ma ▁D ai ▁was ▁also ▁cred ited ▁with ▁sl ay ing ▁the ▁Sh u ▁general ▁Wei ▁Yan , ▁who ▁was ▁alleg ed ▁to ▁have ▁turned ▁against ▁Sh u ▁after ▁the ▁death ▁of ▁Zh uge ▁Li ang . ▁ ▁Life ▁Ma ▁D ai ▁was ▁a ▁younger ▁cousin ▁of ▁Ma ▁Ch ao . ▁He ▁does ▁not ▁have ▁a ▁bi ography ▁in ▁the ▁Records ▁of ▁the ▁Three ▁Kingdom s ▁( S angu oz hi ), ▁the ▁author itative ▁source ▁for ▁the ▁history ▁of ▁the ▁Three ▁Kingdom s ▁period ; ▁he ▁is ▁mentioned ▁occasionally ▁in ▁the ▁bi ograph ies ▁of ▁other ▁people ▁such ▁as ▁Ma ▁Ch ao ▁and ▁Wei ▁Yan . ▁He ▁is ▁first ▁mentioned ▁in ▁Ma ▁Ch ao ' s ▁bi ography ▁in ▁a ▁letter ▁written ▁by ▁Ma ▁Ch ao ▁to