Document:

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                                                                   EXHIBIT 10.85

              Equity Pledge Agreement-Participation Letter of Shenzhen E-Time

                   ACKNOWLEDGEMENT LETTER FOR PARTICIPATION OF
                             EQUITY PLEDGE AGREEMENT

JIMMY WEI YU (Identity Card Number: 310106731015081) and JASON NANCHUN JIANG
(Identity Card Number: 310109730305521) (hereinafter the "PARTICIPATED
PLEDGOR"), and SHENZHEN E-TIME COMMERCIAL CONSULTING CO., LTD. (registered
address: Room 802, Zhongdian Information Building, No. 1 Xinwen Road, Futian
District, Shenzhen) (hereinafter the "PARTICIPATED TARGET COMPANY"), hereby
agree to participate in Equity Pledge Agreement dated on March 28, 2005 between
Focus Media Technology (Shanghai) Co., Ltd. (hereinafter "FOCUS MEDIA
TECHNOLOGY"), Focus Media Digital Information Technology (Shanghai) Co, Ltd.
(hereinafter "FOCUS MEDIA DIGITAL"), Shanghai Focus Media Advertisement Co.,
Ltd. and other relevant parties (hereinafter the "EQUITY PLEDGE AGREEMENT") as
an independent contract party. The Participated Pledgor and the Participated
Target Company hereby agree to pledge the equity of the Participated Target
Company which constitute 100% of the registered capital of the Participated
Target Company to Focus Media Technology as of the date of this Acknowledgement
Letter to secure the following contractual obligations:

1.    Contractual Obligation for the Participated Pledgor:

(a)   Contractual Obligation under the Call Option Agreement among Focus Media
      Technology and other relevant parties dated March 28 2005 (hereinafter the
      "CALL OPTION AGREEMENT") participated by the Pledgor pursuant to the
      Acknowledge Letter executed by the Participated Pledgor on the date May
      22, 2006; and

(b)   Contractual Obligation under the Shareholder's Voting Rights Proxy
      Agreement among Focus Media Technology and other relevant parties dated
      March 28 2005 (hereinafter the "PROXY AGREEMENT") participated by the
      Pledgor pursuant to the Acknowledge Letter executed by the Participated
      Pledgor on the date May 22, 2006.

<PAGE>

              Equity Pledge Agreement-Participation Letter of Shenzhen E-Time

2.    Contractual Obligation for the Participated Target Company:

(a)   Contractual Obligation under the Call Option Agreement participated by the
      Target Company pursuant to the Acknowledge Letter executed by the
      Participated Target Company on the date May 22, 2006; and

(b)   Contractual Obligation under the Proxy Agreement participated by the
      Target Company pursuant to the Acknowledge Letter executed by the
      Participated Target Company on the date May 22, 2006.

This Acknowledgement Letter once executed by the Participated Pledgor and
Participated Target Company, the Participated Pledgor and the Participated
Target Company shall make the same undertakings and warranties with those of
Pledgors and Target Companies under the Equity Pledge Agreement (to the extent
that is related and applicable to Participating Shareholder and Participated
Target Company), agree to perform the obligations of Pledgors and Target
Companies stipulated in the Equity Pledge Agreement (to the extent that is
related and applicable to Participating Shareholder and Participated Target
Company), and admit the rights and obligations of Parties under the Equity
Pledge Agreement.

                   [THE REMAINDER OF THIS PAGE IS LEFT BLANK]

<PAGE>

              Equity Pledge Agreement-Participation Letter of Shenzhen E-Time

                                [EXECUTION PAGE]

JIMMY WEI YU

Signature by:     /s/ Jimmy Wei Yu
              ------------------------
Date: May 22, 2006

JASON NANCHUN JIANG

Signature by :    /s/ Jason Nanchun Jiang
              --------------------------------
Date: May 22, 2006

SHENZHEN E-TIME COMMERCIAL CONSULTING CO., LTD.
(Company chop)

Signature by:     /s/ Jason Nanchun Jiang
              -------------------------------
Name: Jason Nanchun Jiang
Position: Authorized Representative
Date: May 22, 2006

FOCUS MEDIA TECHNOLOGY (SHANGHAI) CO., LTD.
(Company chop)

Signature by:     /s/ Jason Nanchun Jiang
              --------------------------------
Name: Jason Nanchun Jiang
Position: Authorized Representative
Date: May 22, 2006

FOCUS MEDIA DIGITAL INFORMATION TECHNOLOGY (SHANGHAI) CO, LTD.
(Company chop)

Signature by:     /s/ Jason Nanchun Jiang
              --------------------------------
Name: Jason Nanchun Jiang
Position: Authorized Representative
Date: May 22, 2006<PAGE>

                                                                   EXHIBIT 10.86

                 Call Option Agreement-Participation Letter of Shenzhen E-TIME

                   ACKNOWLEDGEMENT LETTER FOR PARTICIPATION OF
                              CALL OPTION AGREEMENT

JIMMY WEI YU (Identity Card Number: 310106731015081) and JASON NANCHUN JIANG
(Identity Card Number: 310109730305521) (hereinafter the "PARTICIPATED
PLEDGOR"), and SHENZHEN E-TIME COMMERCIAL CONSULTING CO., LTD. (registered
address: Room 802, Zhongdian Information Building, No. 1 Xinwen Road,
Futian District, Shenzhen) (hereinafter the "NEW TARGET COMPANY"), as
independent party, hereby agree to participate in the Shareholders' Voting
Rights Call Option Agreement among Focus Media Technology (Shanghai) Co., Ltd.
(hereinafter "FOCUS MEDIA TECHNOLOGY"), Shanghai Focus Media Advertisement Co.,
Ltd. and other relevant parties (hereinafter the "CALL OPTION AGREEMENT") dated
March 28 2005. The Participating Shareholder hereby grant Focus Media Technology
with an irrevocable equity Call Option (hereinafter "CALL OPTION") in respect to
70% and 30% of the equity share of the New Target Company (hereinafter "NEWLY
INCREASED EQUITY SHARE") respectively held by the Participating Shareholder.
Once this Acknowledgement Letter is executed by the Participating Shareholder
and the New Target Company, the New Target Company and the Newly Increased
Equity Share shall be deemed to be the "Target Company" and "Option Equity"
defined under the Call Option Agreement, and the Participating Shareholder and
the New Target Company shall be deemed to have made the same undertakings and
warranties related to the New Target Company and Option Equity with those of the
Shareholders and Target Companies under the Call Option Agreement have made
related to "Target Company" and "Option Equity" (to the extent that is related
and applicable to Participating Shareholder and Participated Target Company),
and acknowledged and agreed to respectively perform the same obligations in the
Call Option Agreement (to the extent that is related and applicable to the
Participating Shareholder and the Participated Target Company).

<PAGE>

         Call Option Agreement-Participation Letter of Shenzhen E-TIME

                                [EXECUTION PAGE]

JIMMY WEI YU

Signature by :     /s/ Jimmy Wei Yu
               ------------------------
Date: May 22, 2006

JASON NANCHUN JIANG

Signature by :     /s/ Jason Nanchun Jiang
               --------------------------------
Date: May 22, 2006

SHENZHEN E-TIME COMMERCIAL CONSULTING CO., LTD.
(Company chop)

Signature by:      /s/ Jason Nanchun Jiang
               -------------------------------
Name: Jason Nanchun Jiang
Position: Authorized Representative
Date: May 22, 2006

FOCUS MEDIA TECHNOLOGY (SHANGHAI) CO., LTD.
(Company chop)

Signature by:      /s/ Jason Nanchun Jiang
               --------------------------------
Name: Jason Nanchun Jiang
Position: Authorized Representative
Date: May 22, 2006<PAGE>

                                                                   EXHIBIT 10.87

   Shareholder's Voting Rights Proxy Agreement-Participation Letter of Shenzhen
                                              E-Time

                   ACKNOWLEDGEMENT LETTER FOR PARTICIPATION OF
                   SHAREHOLDERS' VOTING RIGHTS PROXY AGREEMENT

JIMMY WEI YU (Identity Card Number: 310106731015081) and JASON NANCHUN JIANG
(Identity Card Number: 310109730305521) (hereinafter the "PARTICIPATING
SHAREHOLDER"), and SHENZHEN E-TIME COMMERCIAL CONSULTING CO., LTD. (registered
address: Room 802, Zhongdian Information Building, No. 1 Xinwen Road,
Futian District, Shenzhen) (hereinafter the "PARTICIPATED TARGET COMPANY"), as
independent party, hereby agree to participate in the Shareholders' Voting
Rights Proxy Agreement among Focus Media Technology (Shanghai) Co., Ltd.
(hereinafter "FOCUS MEDIA TECHNOLOGY"), Shanghai Focus Media Advertisement Co.,
Ltd. and other relevant parties (hereinafter the "PROXY AGREEMENT") dated March
28 2005. Participating Shareholder and Participated Target Company agree to
entrust the Trustees designated by Focus Media Technology to exercise the voting
rights in Participated Target Company in respect of 100% of the equity interest
in the registered capital of Participated Target Company held by the
Participating Shareholder as of the date of this Acknowledgement Letter, on
behalf of Participating Shareholder.

Once this Acknowledgement Letter is executed by the Participating Shareholder
and Participated Target Company, Participating Shareholder and Participated
Target Company shall be deemed to have made the same undertakings and warranties
with those of the Shareholders and Target Companies under the Proxy Agreement
(to the extent that is related and applicable to Participating Shareholder and
Participated Target Company), agreed to respectively perform the obligations of
the Shareholders and Target Companies stipulated in the Proxy Agreement (to the
extent that is related and applicable to Participating Shareholder and
Participated Target Company), and acknowledged the rights and obligations of the
Parties under the Proxy Agreement.

<PAGE>

   Shareholder's Voting Rights Proxy Agreement-Participation Letter of Shenzhen
                                              E-Time

                                [EXECUTION PAGE]

JIMMY WEI YU

Signature by :     /s/ Jimmy Wei Yu
               -------------------------
Date: May 22, 2006

JASON NANCHUN JIANG

Signature by :     /s/ Jason Nanchun Jiang
               --------------------------------
Date: May 22, 2006

SHENZHEN E-TIME COMMERCIAL CONSULTING CO., LTD.
(Company chop)

Signature by:      /s/ Jason Nanchun Jiang
               --------------------------------
Name: Jason Nanchun Jiang
Position: Legal Representative
Date: May 22, 2006

FOCUS MEDIA TECHNOLOGY (SHANGHAI) CO., LTD.
(Company chop)

Signature by:      /s/ Jason Nanchun Jiang
               --------------------------------
Name: Jason Nanchun Jiang
Position: Legal Representative
Date: May 22, 2006

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