EXHIBIT 13.1

                             KONGZHONG CORPORATION.

                                  Certification

            Pursuant to 18 U.S.C. Section 1350, the undersigned, Yunfan Zhou,
Chief Executive Officer of KongZhong Corporation (the "Company"), hereby
certifies, to his knowledge, that the Company's annual report on Form 20-F for
the year ended December 31, 2004 (the "Report") fully complies with the
requirements of Section 13(a) or 15(d), as applicable, of the Securities
Exchange Act of 1934, and that the information contained in the Report fairly
presents, in all material respects, the financial condition and results of
operations of the Company.

Date: June 28, 2005

                                              By: /s/ Yunfan Zhou
                                                  ------------------------------
                                                  Name: Yunfan Zhou
                                                  Title: Chief Executive Officer

            The foregoing certification is being furnished solely pursuant to 18
U.S.C. Section 1350 and is not being filed as part of the Report or as a
separate disclosure document.