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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