▁the ▁Man chus ▁began ▁to ▁conduct ▁ra ids ▁on ▁the ▁northern ▁border ▁of ▁the ▁M ing ▁Empire . ▁Their ▁dep red ations ▁ultimately ▁led ▁to ▁the ▁fall ▁of ▁the ▁M ing ▁dynast y ▁in ▁ 1 6 4 4 . ▁The ▁fall ▁of ▁the ▁M ing ▁dynast y ▁was ▁not ▁a ▁result ▁of ▁the ▁last ▁M ing ▁dynast y ▁em peror ’ s ▁Ch ong z hen ▁Emperor ' s ▁rule , ▁but ▁instead ▁due ▁to ▁the ▁ling ering ▁consequences ▁of ▁the ▁W an li ▁Emperor ' s ▁gross ▁neglect ▁of ▁his ▁duties ▁as ▁Emperor . ▁ ▁The ▁W an li ▁Emperor ▁died ▁in ▁ 1 6 2 0 ▁and ▁was ▁buried ▁in ▁the ▁D ing ling ▁M aus ole um ▁among ▁the ▁M ing ▁tomb s ▁on ▁the ▁out sk ir ts ▁of ▁Be ij ing . ▁His ▁tomb ▁is ▁one ▁of ▁the ▁biggest ▁in ▁the ▁vic inity ▁and ▁one ▁of ▁only ▁two ▁that ▁are ▁open ▁to ▁the ▁public . ▁The ▁tomb ▁was ▁exc av ated ▁in ▁ 1 9 5 6 , ▁and ▁remains ▁the ▁only ▁imperial ▁tomb ▁that ▁had ▁been ▁exc av ated ▁since ▁the ▁found ing ▁of ▁the ▁People ' s ▁Republic ▁of ▁China ▁in ▁ 1 9 4 9 . ▁In ▁ 1 9 6 6 , ▁during ▁the ▁Cultural ▁Revolution , ▁Red ▁Gu ards ▁storm ed ▁the ▁D ing ling ▁M aus ole um , ▁and ▁drag ged ▁the ▁remains ▁of ▁the ▁W an li ▁Emperor ▁and ▁his ▁two ▁em press es ▁to ▁the ▁front ▁of ▁the