CUSIP No. 16870R202 13D Page 1 of 4 Pages


SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549

_________________

SCHEDULE 13D
Under the Securities Exchange Act of 1934



Chilco River Holdings Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

16870R202

(CUSIP Number)

Guoxiu Yan
c/o Chilco River Holdings Inc.
16027 Arrow Highway, Suite D, Irwindale, California 91706 (646) 330-5859

(Name, Address and Telephone Number of Person
Authorized to Receive Notices and Communications)

August 3, 2005

(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 that is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(b)(3)(4), check the following box.   [   ]






CUSIP No. 16870R202 13D Page 2 of 4 Pages


1 NAMES OF REPORTING PERSONS,
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

Guoxiu Yan
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
United States
Number of
Shares
Beneficially
Owned by
Each
Reporting
Person
With:
7 SOLE VOTING POWER
1,807,913 Shares of Common Stock
8 SHARED VOTING POWER
0
9 SOLE DISPOSITIVE POWER
1,150,490 Shares of Common Stock
10 SHARED DISPOSITIVE POWER
657,423 Shares of Common Stock
11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,807,913 common shares of the Issuer are owned by Guoxiu Yan; 657,423 of those shares are currently held in escrow
12 CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
[   ]
13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)*
8.4285%
14 TYPE OF REPORTING PERSON*
IN





CUSIP No. 16870R202 13D Page 3 of 4 Pages


Item 1.   Security and Issuer.

Common Shares

Chilco River Holdings Inc.
16027 Arrow Highway, Suite D
Irwindale, California 91706

Item 2.   Identity and Background.

(a)   Guoxiu Yan

(b)   c/o Chilco River Holdings Inc.
16027 Arrow Highway, Suite D
Irwindale, California 91706

(c)   Mrs. Yan's present principal occupation is secretary of Kubuk International Inc.

(d)   There has been no criminal conviction against Mrs. Yan in the past five years.

(e)   Mrs. Yan has not been party to a civil proceeding of a judicial or administrative body resulting in a judgment, decree or final order enjoining future violations or prohibiting or mandating activities subject to state or federal securities laws or finding any violation with respect to such laws.

(f)   Mrs. Yan is a citizen of the United States.

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

On August 3, 2005, 1,807,913 common shares of the Issuer were acquired by Guoxiu Yan in connection with the acquisition of Kubuk International, Inc., a California corporation, by Chilco River Holdings Inc.

Item 4.    Purpose of Transaction.

Mrs. Yan acquired the shares of the Issuer as a shareholder of Kubuk International Inc. under a share exchange agreement relating to the acquisition of Kubuk International Inc. by Chilco River Holdings Inc. 657,423 of the 1,807,913 common shares held by Mrs. Yan are currently held in escrow subject to escrow arrangements entered into in connection with the acquisition of Kubuk International Inc. The acquisition of Kubuk International Inc. by Chilco River Holdings Inc. resulted in a change of control of Chilco River Holdings Inc. Mrs. Yan is not an officer or director of Chilco River Holdings, Inc.

Item 5.   Interest in Securities of the Issuer.

(a)   Guoxiu Yan beneficially owns 1,807,913 common shares of the Issuer as of August 3, 2005 and has sole voting power over 1,807,913 of the shares and sole dispositive power over 1,150,490 of the shares.

The total shares of Common Stock constitutes 8.4285% of the outstanding common shares of the issuer.

(b)   See paragraph (a) above.

(c)   See Item 4 above.


CUSIP No. 16870R202 13D Page 4 of 4 Pages


(d)   Not applicable.

(e)   Not applicable.

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

None.

Item 7.   Materials to be Filed as Exhibits.

None.

Signature

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 correct.

Signed: September 15, 2005 /s/  Guoxiu Yan                                                                   
  Guoxiu Yan