SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549
                                                                      
                                  SCHEDULE 13D
                                 (Rule 13d-101)

             INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
            TO RULE 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO
                                  RULE 13d-2(a)

                               (Amendment No. )

                             CHINA NATURAL GAS, INC.
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                                (Name of Issuer)


                    Common Stock, par value $.0001 per share
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                         (Title of Class of Securities)

                                   168910 10 7
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                                 (CUSIP Number)

                                   Shaohu Jia
                      Tang Xing Shu Ma Building, Suite 418
                                 Tang Xing Road
                               Xian High Tech Area
                             Xian, Shaanxi Province
                                      China
                                 86-29-88323325
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                  (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)

                                December 6, 2005
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             (Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report
the acquisition which is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box
?.

         Note. Schedules filed in paper format shall include a signed original
and five copies of the schedule, including all exhibits. See Rule 13d-7(b) for
other parties to whom copies are to be sent.


                         (Continued on following pages)

                               (Page 1 of 4 Pages)


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________________

     (1)The  remainder  of this cover  page shall be filled out for a  reporting
person's  initial  filing on this  form with  respect  to the  subject  class of
securities,  and for any subsequent amendment containing information which would
alter disclosures provided in a prior cover page.

     The  information  required  on the  remainder  of this  cover page shall be
deemed to be "filed"  for the purpose of Section 18 of the  Securities  Exchange
Act of 1934 or otherwise  subject to the  liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the Notes)







-------------------------------------------                                        ----------------------------------------

          CUSIP No. 222891 10 3                              13D                   Page 2 of 4 Pages

--------- ----------------------------------------------------------------------------------------------------------------

                                           
                                                                                                    
1         NAME OF REPORTING PERSONS                                                                     
          Shaohu Jia
          
          I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS                                     
          n/a

--------- ----------------------------------------------------------------------------------------------------------------

2         CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                             
          
          (a) |_|

          (b) |_|
--------- ----------------------------------------------------------------------------------------------------------------

3         SEC USE ONLY

--------- ----------------------------------------------------------------------------------------------------------------

4         SOURCE OF FUNDS*           

          OO

--------- ----------------------------------------------------------------------------------------------------------------

5         CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or
          2(e)
          |_|

--------- ----------------------------------------------------------------------------------------------------------------

6         CITIZENSHIP OR PLACE OF ORGANIZATION
          China

----------------------- ----- ---------------------------------------------------------------------------------------------

                          7   SOLE VOTING POWER
   NUMBER OF SHARES           270,145 shares of common stock.
                        ----- ---------------------------------------------------------------------------------------------

     BENEFICIALLY         8   SHARED VOTING POWER
       OWNED BY               0
                        ----- ---------------------------------------------------------------------------------------------

         EACH             9   SOLE DISPOSITIVE POWER
      REPORTING               270,145 shares of common stock.
                        ----- ---------------------------------------------------------------------------------------------

     PERSON WITH         10   SHARED DISPOSITIVE POWER
                              0
--------- -----------------------------------------------------------------------------------------------------------------

  11      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
          270,145 shares of common stock.

--------- -----------------------------------------------------------------------------------------------------------------

  12      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
          CERTAIN
          SHARES*
          |_|

--------- -----------------------------------------------------------------------------------------------------------------

  13      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

          5.3%

--------- -----------------------------------------------------------------------------------------------------------------

  14      TYPE OF REPORTING PERSON*

          IN
--------- -----------------------------------------------------------------------------------------------------------------





                                                               Page 3 of 4 Pages

Item 1.  Security and Issuer.

          This statement relates to shares of the common stock, par value $.0001
per share, of China Natural Gas, Inc. (formally Coventure International Inc.), a
Delaware corporation (the "Company"). The principal executive offices of the
Issuer are presently located at Tang Xing Shu Ma Building, Suite 418, Tang Xing
Road, Xian High Tech Area, Xian, Shaanxi Province, China.

Item 2.  Identity and Background.

         This statement is being filed by Shaohu Jia, a citizen of China. Mr.
Jia maintains an office at Tang Xing Shu Ma Building, Suite 418, Tang Xing Road,
Xian High Tech Area, Xian, Shaanxi Province, China.

          On December 6, 2005, the Company entered into and closed a share
purchase agreement with Xian Xilan Natural Gas Co., Ltd., a corporation formed
under the laws of the People's Republic of China ("Xilan"), and each of Xilan's
shareholders, including Mr. Jia (the "Purchase Agreement"). Pursuant to the
Agreement, the Company acquired all of the issued and outstanding capital stock
of Xilan from the Xilan shareholders in exchange for 4,000,000 shares of Company
common stock.

         During the past five years, Mr. Jia has not been (a) convicted in a
criminal proceeding (excluding traffic violations or similar misdemeanors, if
any), or (b) been a party to a civil proceeding of a judicial or administrative
body of competent jurisdiction and as a result thereof was or is subject to a
judgment, decree or final order enjoining future violations of, or prohibiting
or mandating activities subject to, federal or state securities laws or finding
any violation with respect to such laws.

Item 3. Source and Amount of Funds or Other Consideration.

         The sole source of consideration for the issuance of the shares of the
Company owned by Mr. Jia was the tender of his ownership of outstanding shares
of Xilan pursuant to the Purchase Agreement.

Item 4. Purpose of Transaction.

         See Item 2 above.

Item 5.  Interest in Securities of the Issuer.

         Under the rules and regulations of the Securities and Exchange
Commission, Mr. Jia beneficially owns 270,145 shares of common stock,
representing 5.3% of the outstanding shares of common stock of the Company. The
percentage of outstanding shares of common stock is computed based on 5,051,022
shares of common stock outstanding. Except for the transactions described
herein, Mr. Jia does not have any plans, arrangements or agreements for the
acquisition or issuance of additional shares of the Company's common stock or
other securities convertible into equity securities of the Company.




                                                               Page 4 of 4 Pages

Item 6.  Contracts, Arrangements, Understandings or Relationships with Respect 
         to Securities of the Issuer.

         None.

Item 7.  Material to be Filed as Exhibits.

         1. Securities Purchase Agreement dated as of December 6, 2005, by and
           among Coventure International Inc., Xian Xilan Natural Gas Co.,Ltd.
           and each of Xilan's shareholders (incorporated by reference to the
           Company's Form 8-K filed on December 9, 2005).


                                   SIGNATURES

         After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
accurate.

December 19, 2005
                                 /s/ SHAOHU JIA
                                 --------------
                                 Shaohu Jia