QIHU [Qihoo 360 Technology Co] SC 13G/A: Shu Cao (2) Check the Appropriate Box if
[Shu Cao (2) Check the Appropriate Box if a Member of a Group* (a) o (b) x (3) SEC Use Only (4) Citizenship or Place of Organization People’s Republic of China Number of Shares (5) Sole Voting Power 16,308,060 (6) Shared Voting Power 0]