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WUZHEN, Zhejiang, Dec. 16 -- Chinese President Xi Jinping on Wednesday called for joint efforts to combat cyber crimes and Internet terrorism, while underscoring that there should not be any double standards in safeguarding cyber security.

"We can not just have security for one or some countries, leaving the rest insecure, still less should one seek the so-called absolute security of itself at the expense of security of others," Xi said in a keynote speech at the opening ceremony of the Second World Internet Conference held in the river town of Wuzhen, east China's Zhejiang.