Exhibit 10.1

NOTES PAYABLE AGREEMENT

This Notes Payable Agreement (the “Agreement”) is entered into as of December 31, 2025 (the “Effective Date”), by and between:

HI-GREAT GROUP HOLDING COMPANY, a Nevada corporation (“Borrower”), and Sella Care, Inc., a California corporation (“Lender”).

Borrower and Lender may be referred to individually as a “Party” and collectively as the “Parties.”

WHEREAS, Borrower has an outstanding accounts payable balance owed to Lender that has remained unpaid for more than three (3) years; and

WHEREAS, the Parties desire to formalize and reclassify such outstanding balance as a loan payable under the terms set forth herein;

NOW, THEREFORE, in consideration of the mutual covenants contained herein, the Parties agree as follows:

The Parties agree that the total outstanding accounts payable balance of $85,000 as of the Effective Date (the “Principal”) shall be converted and reclassified as a loan payable from Borrower to Lender.

(c) Accrued interest shall be payable annually or upon repayment of the Principal, whichever occurs first.

This Agreement shall remain in effect until December 31, 2028 (the “Maturity Date”), at which time all outstanding Principal and accrued but unpaid interest shall become due and payable in full.

(a) Borrower may prepay all or any portion of the Principal and accrued interest at any time without penalty.

then all outstanding Principal and accrued interest under this Agreement shall become immediately due and payable in full.

(b) Such acceleration shall occur without recourse to Borrower’s shareholders, officers, directors, or prior management, except as otherwise required by law.

Upon execution of this Agreement, Borrower shall reclassify the outstanding accounts payable balance as a notes payable (loan payable) in its financial records. Lender shall make corresponding adjustments in its accounting records.

The Parties acknowledge that this Agreement constitutes a related-party transaction and shall be disclosed in accordance with applicable accounting standards, including U.S. GAAP.

Each Party represents and warrants that:

(a) It has the authority to enter into this Agreement;

(b) This Agreement is valid, binding, and enforceable; and

(c) Execution has been duly authorized.

This Agreement shall be governed by and construed in accordance with the laws of the State of California, without regard to conflict of law principles.

This Agreement constitutes the entire agreement between the Parties and supersedes all prior agreements or understandings.

Any amendment must be in writing and signed by both Parties.

This Agreement may be executed in counterparts, each of which shall be deemed an original.

IN WITNESS WHEREOF, the Parties have executed this Agreement as of the Effective Date. BORROWER:

HI-Great Group Holding Company