Irrevocable Power of Attorney. Each shareholder of Beijing Blue I.T. executed an irrevocable power of attorney on September23, 2005, which was superseded by an irrevocable power of attorney executed by such shareholder of Beijing Blue I.T. on December19, 2016 appointing ChinaCache Beijing or a person designated by ChinaCache Beijing as his or her attorney-in-fact to attend shareholders meetings of Beijing Blue I.T. and to vote on his or her behalf on all matters requiring shareholder approval, including but not limited to, the sale, transfer, pledge, or disposition of his or her shareholding in Beijing Blue I.T. The power of attorney remains valid and irrevocable from the date of its execution, so long as he or she remains the shareholder of Beijing Blue I.T.