Exhibit 99.1

CUSIP No. 16954L105 13D Page 1 of 3 Pages

exhibit A

Agreement of Joint Filing

The undersigned hereby agree that a single Schedule 13D (or any amendment thereto) relating to the Ordinary Shares and ADSs of 51 Talk Online Education Group shall be filed on behalf of each of the undersigned and that this Agreement shall be filed as an exhibit to such Schedule 13D.

Date: May 7, 2025

 

DCM Ventures China Turbo Fund, L.P.
By: DCM Turbo Fund Investment Management, L.P.
Its General Partner
By:  DCM Turbo Fund International, Ltd.
Its General Partner
By:	/s/ Matthew C. Bonner
	Matthew C. Bonner, Attorney-In-Fact*
DCM Ventures China Turbo Affiliates Fund, L.P.
By: DCM Turbo Fund Investment Management, L.P.
Its General Partner
By:  DCM Turbo Fund International, Ltd.
Its General Partner
By:	/s/ Matthew C. Bonner
	Matthew C. Bonner, Attorney-In-Fact*
DCM Turbo Fund INVESTMENT MANAGEMENT, L.P.
By:  DCM Turbo Fund International, Ltd.
Its General Partner
By:	/s/ Matthew C. Bonner
	Matthew C. Bonner, Attorney-In-Fact*

CUSIP No. 16954L105 13D Page 2 of 3 Pages

DCM Turbo Fund International, Ltd.
By:	/s/ Matthew C. Bonner
	Matthew C. Bonner, Attorney-In-Fact*
DCM HYBRID RMB FUND, L.P.
By:  DCM HYBRID RMB FUND INVESTMENT MANAGEMENT, L.P.
Its General Partner
By:  DCM HYBRID RMB FUND INTERNATIONAL, LTD.
Its General Partner
By:	/s/ Matthew C. Bonner
	Matthew C. Bonner, Attorney-In-Fact*
DCM HYBRID RMB FUND INVESTMENT MANAGEMENT, L.P.
By:  DCM HYBRID RMB FUND INTERNATIONAL, LTD.
Its General Partner
By:	/s/ Matthew C. Bonner
	Matthew C. Bonner, Attorney-In-Fact*
DCM HYBRID RMB FUND INTERNATIONAL, LTD.
By:	/s/ Matthew C. Bonner
	Matthew C. Bonner, Attorney-In-Fact*
F. HURST LIN
/s/ F. Hurst Lin
Matthew C. Bonner, Attorney-In-Fact*
MATTHEW C. BONNER
/s/ Matthew C. Bonner
Matthew C. Bonner

CUSIP No. 16954L105 13D Page 3 of 3 Pages

ANDRE G. LEVI  

/s/ Andre G. Levi

Matthew C. Bonner, Attorney-In-Fact*  

* Signed pursuant to a Power of Attorney already on file with the appropriate agencies.