Witnesses say Ling Su clung on single handed for 20 minutes before police and firefighters arrived.
He was dangling from a six-storey apartment in Changchun, Jilin province, northern China.
The door to the apartment was locked, which stopped the emergency services reaching her quicker.
We heard a shout and screaming and there he was dangling from the window with his wife hanging onto his pants,' said one passer by.
'She got a stronger hold on his leg and screamed for help.
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