Document:

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[Translation of Chinese original]

                                                                   EXHIBIT 10.10

                     AMENDED AND RESTATED POWER OF ATTORNEY

     I, Songlin Yang, citizen of the People's Republic of China (the "PRC"), PRC
ID card number 410105490701051, hereby irrevocably authorize Mr. Yunfan Zhou to
exercise the following powers and rights during the term of this Power of
Attorney:

     I hereby assigns Mr. Yunfan Zhou to vote on my behalf at the shareholders'
meetings of Beijing AirInBox Information Technologies Co., Ltd and exercise the
full voting rights as the shareholder of the company as granted to me by law and
under the Articles of Association of the company, including but not limited to,
the right to propose the holding of shareholders' meeting, to accept any
notification about the holding and discussion procedure of the meeting, to
attend the shareholders' meeting of Beijing AirInBox Information Technologies
Co., Ltd and exercise the full voting rights (such as, my authorized
representative on the shareholders' meeting of the company, to designate and
appoint the directors and the general manager and to decide the allotment of the
profits, etc.), to sell or transfer any or all of my shares of Beijing AirInBox
Information Technologies Co., Ltd, etc.

     The above authorization and designation are based upon the fact that Mr.
Yunfan Zhou is acting as an employee of KongZhong Information Technologies
(Beijing) Co., Ltd and KongZhong Information Technologies(Beijing) Co., Ltd
accepts such authorization and designation. Once Mr. Yunfan Zhou loses his title
or position in KongZhong Information Technologies (Beijing) Co., Ltd or
KongZhong Information Technologies(Beijing) Co., Ltd issues a written notice to
dismiss or replace the designated/authorized person, this Power of Attorney
shall become invalid immediately and I will withdraw such authorization to him
immediately and designate/authorize other individual employed by KongZhong
Information Technologies(Beijing) Co., Ltd to exercise all the rights mentioned
above. Therefore, I will sign another Power of Attorney in accordance with the
terms and form of this one or with other terms or form subject to KongZhong
Information Technologies (Beijing) Co., Ltd's satisfaction.

     The term of this Power of Attorney is ten (10) years except for the early
termination of Business Operation Agreement jointly executed by Beijing AirInBox
Information Technologies Co., Ltd, KongZhong Information Technologies (Beijing)
Co., Ltd, Yunfan Zhou, Zhen Huang, Yang Cha and me by any reason, commencing
from the signing date of this Power of Attorney. This Power of Attorney should
upon becoming effective replace a similar power of attorney dated March 31, 2004
executed by me.

                                                                /s/ Songlin Yang

                                                                    (Signature)

                                                                    SONGLIN YANG

                                                                       5/10/2004

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                         SCHEDULE OF POWERS OF ATTORNEY

1.   From the shareholders of Beijing AirInbox Information Technologies Co.,
     Ltd, each dated May 10, 2004

     (a)  Songlin Yang to Yunfan Zhou
     (b)  Yang Cha to Yunfan Zhou
     (c)  Zhen Huang to Yunfan Zhou

2.   From Zhen Huang, as a shareholder of Beijing Boya Wuji Technologies Co.,
     Ltd, to Yunfan Zhou, dated March 30, 2004<PAGE>

                                                                   EXHIBIT 10.11

                                    AGREEMENT

     This Agreement is entered into as of March 31st, 2004, in Beijing, P.R.C.
by and between the following two parties

KONGZHONG CORPORATION

Legal Representative:Yunfan Zhou

KONGZHONG INFORMATION TECHNOLOGIES (BEIJING) CO., LTD

Legal Registered Address: 12th floor, Zhong Dian Building, Zhong Guan Cun Nan Da
Jie, Hai Dian District, Beijing

Legal Representative: Yunfan Zhou

BEIJING AIRINBOX INFORMATION TECHNOLOGIES CO., LTD

Legal Address: 12th floor, Zhong Dian Building, Zhong Guan Cun Nan Da Jie, Hai
Dian District, Beijing

Legal Representative: Yunfan Zhou

YUNFAN ZHOU

PIN: 110102197411102374

Address: 9# 13A, Ma Dian Guan Cheng Nan Yuan, Hai Dian District,
Beijing

SONGLIN YANG

PIN: 410105490701051

Address: 9# 13A, Ma Dian Guan Cheng Nan Yuan, Hai Dian District, Beijing

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ZHEN HUANG

PIN: 610104780219162

Address: 9# 13A, Ma Dian Guan Cheng Nan Yuan, Hai Dian District, Beijing

WHEREAS:

1.     The Loan Agreement, which was entered into between Yunfan Zhou and
       Communications Over The Air Inc. (afterwards transferred its name into
       KongZhong Corporation) in May 7, 2002, provided that KongZhong
       Corporation shall lend Yunfan Zhou no less than the amount of 700,000
       RMB, which was the contributed capital to BEIJING AIRINBOX INFORMATION
       TECHNOLOGIES CO., LTD by Yunfan Zhou, and Yunfan Zhou acquired entire
       amount of the loan but has not refunded;

2.     The Loan Agreement, which was entered into between Yunfan Zhou and
       Communications Over The Air Inc. (afterwards transferred its name into
       KongZhong Corporation) in September 26, 2003, provided that
       Communications Over The Air Inc. (afterwards transferred its name into
       KongZhong Corporation) shall lend Yunfan Zhou no less than the amount of
       300,000 RMB, which was the capital to pay Leilei Wang, an ex-shareholder,
       in exchange with 15% of the total equity in BEIJING AIRINBOX INFORMATION
       TECHNOLOGIES CO., LTD, and Yunfan Zhou acquired entire amount of the loan
       but has not refunded;

3.     The Loan Agreement, which was entered into between Songlin Yang and
       Communications Over The Air Inc. (afterwards transferred its name into
       KongZhong Corporation) in May 7, 2002, provided that KongZhong
       Corporation shall lend Songlin Yang no less than the amount of 700,000
       RMB, which was the contributed capital to BEIJING AIRINBOX INFORMATION
       TECHNOLOGIES CO.,LTD by Songlin Yang, and Songlin Yang acquired entire
       amount of the loan but has not refunded;

4.     The Loan Agreement, which was entered into between Zhen Huang and
       Communications Over The Air Inc. (afterwards transferred its name into
       KongZhong Corporation) in September 26, 2003, provided that
       Communications Over The Air Inc. (afterwards transferred its name into
       KongZhong Corporation) shall lend Zhen Huang no less than the amount of
       300,000 RMB, which was the capital to pay Leilei Wang, an ex-shareholder,
       in exchange with 15% of the total equity in BEIJING AIRINBOX INFORMATION
       TECHNOLOGIES CO., LTD, and Zhen Huang acquired entire amount of the

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       loan but has not refunded;

5.     The Exclusive Agreement, which was entered into by and between
       KONGZHONG INFORMATION TECHNOLOGIES (BEIJING) CO., LTD and BEIJING
       AIRINBOX INFORMATION TECHNOLOGIES CO., LTD in July 30, 2002, provided
       that two parties shall cooperate with each other in the fields of
       technical support, technical service, domain name and trademark;

6.     All Parties to this Agreement reach the contracts relating to the
       relevant issues in the above Agreement in the signature date of this
       agreement. Yunfan Zhou, Songlin Yang, Zhen Huang and KongZhong
       Corporation reached a loan Agreement; KONGZHONG INFORMATION TECHNOLOGIES
       (BEIJING) CO., LTD and BEIJING AIRINBOX INFORMATION TECHNOLOGIES CO., LTD
       reached a trademark license agreement, a domain name license agreement
       and an exclusive technical and consulting services agreement; Yunfan
       Zhou, Songlin Yang, Zhen Huang and KONGZHONG INFORMATION TECHNOLOGY
       (BEIJING) CO., LTD reached a equity mortgage agreement; Yunfan Zhou,
       Songlin Yang, Zhen Huang and KONGZHONG INFORMATION TECHNOLOGIES (BEIJING)
       CO., LTD AND BEIJING AIRINBOX INFORMATION TECHNOLOGIES CO., LTD reached a
       business management agreement.

     Through friendly negotiation, all parties agrees that:

     1.   After the effective date of this agreement, Article 1 to Article 6 of
          the "Whereas Clause" in the said agreements ("the original
          agreements") shall be substituted by the Articles below Articles 7 of
          the relevant agreements ("the new agreements"). The original
          agreements shall be terminated from the effective date of this
          agreement, and the original agreements have no binding force to
          parties.

     2.   In order to avoid the misunderstanding, the signature and the effect
          of this agreement shall not effect the acquired rights and/or the
          coming obligation under the original agreements.

     3.   After this agreement comes into effect, the rights and obligations of
          all parties under the original contracts shall be ruled by the new
          agreements.

     4.   If dispute occurs among parties in the construction and the
          performance of this agreement, each party shall settle the disputes by
          negotiation in goodwill. If the

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          relevant parties could not reach the agreement to settle the dispute
          within the 30 days after the a party set forth a request to settle the
          dispute by negotiation, each party may file the relevant disputes to
          China International Economic and Trade Arbitration Committee to
          arbitrate following the effective arbitration rules. The arbitration
          forum is Beijing. The arbitration language is Chinese. The award of
          the arbitration is final and binding to parties.

     5.   The rescind of the original agreements and the effect and substation
          of the new agreements shall be ruled by the law, under which the
          agreements were entered.

     6.   This Agreement goes into effect in the signature date.

     This Agreement is subscribed by parties in the date said above.

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[Signature Page, No Agreement Articles]

KONGZHONG CORPORATION

Authorized Representative:

/s/ Nick Yang

KONGZHONG INFORMATION TECHNOLOGIES (BEIJING) CO., LTD

Authorized Representative:

/s/ Nick Yang

BEIJING AIRINBOX INFORMATION TECHNOLOGIES CO., LTD

Authorized Representative:

/s/ Yunfan Zhou

YUNFAN ZHOU

Signature:  /s/ Yunfan Zhou

SONGLIN YANG

Signature:  /s/ Songlin Yang

ZHEN HUANG

Signature:  /s/ Zhen Huang

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