Exhibit 4.57



Debt Acknowledgement and Repayment Schedule
Agreement



Party A (the “Creditor”): People.cn
Co., Ltd.

Party B (the “Debtor”): ChinaCache
Xin Run Technology (Beijing) Co., Ltd.



According to the
Framework Agreement on Transfer of 100% Equity Interest in Beijing Shuoge Technology Co., Ltd. between ChinaCache Xin Run Technology
(Beijing) Co., Ltd. and People.cn Co., Ltd. dated December 29, 2017 (hereinafter the “Framework Agreement”) and
the Agreement on Transfer of 100% Equity Interest in Beijing Shuoge Technology Co., Ltd. between ChinaCache Xin Run Technology
(Beijing) Co., Ltd. and People.cn Co., Ltd. dated April 3, 2019 (hereinafter the “Transfer Agreement”), Party A
has acquired 100% equity interest in Party B’s wholly owned subsidiary Beijing Shuoge Technology Co., Ltd. through the transfer,
for which Party A had made an advance payment of the transfer price of RMB 325 million to Party B.



In order to identify
Party B’s repayment obligation owed to Party A with respect to the difference of the transfer price and a reasonable cost
for using the funds after the equity transfer, now upon mutual negotiation, the two parties hereby enter into this Debt Acknowledgement
and Repayment Schedule Agreement with terms and conditions set forth below.



I. Amount of debt
and repayment period



(1) The two parties
hereby acknowledge the amount of debt is the difference of the transfer price which is tentatively fixed at RMB73,200,000.00 (in
words: RMB SEVENTY THREE MILLION AND TWO HUNDRED THROUSAND ONLY) and a reasonable cost for using the said difference amount, totaling
RMB86,217,879.98 (in words: RMB EIGHTY SIX MILLION TWO HUNDRED AND SEVENTEEN THOUSAND EITIGHT HUNDRED AND SEVENTY NINE YUAN AND
NINETY EIGHT FEN ONLY).



In case of any difference
in the amount of debt resulting from the equity transfer price confirmed in the evaluation report as agreed in the Transfer Agreement,
the two parties agree to adjust the amount of debt and the repayment plan accordingly.



(2) Repayment period:
6 years from January 1, 2019 to December 31, 2024.



II. Repayment schedule



Party B undertakes
to make full repayments to Party A’s bank account by specified dates as scheduled below. Upon complete fulfillment of the
repayment obligations by Party B, Party A will release Party B from the claims hereunder.



|Repayment
    date    | Amount
    of principal to
 be repaid | Cost
    for using the funds | Amount
    of principal and 
interest
|--------------------- | ------------------------------------- | ---------------------------- | -------------------------------------
|June
    30, 2019     | 3,764,772.
    79                     | 1,235,227.
    21            | 5,000,000.00                         
|October
    30, 2019  | 3,011,818.
    24                     | 988,181.76                   | 4,000,000.00                         
|December
    31, 2019 | 4,168,592.
    36                     | 1,367,720.
    97            | 5,536,313.33                         
|June
    30, 2020     | 5,641,072.27                          | 1,527,084.
    23            | 7,168,156.50                         
|December
    31, 2020 | 5,641,072.
    53                     | 1,527,084.
    30            | 7,168,156.83                         
|June
    30, 2021     | 5,917,818.
    50                     | 1,250,338.
    00            | 7,168,156.50                         
|December
    31, 2021 | 5,917,818.
    77                     | 1,250,338.
    06            | 7,168,156.83                         
|June
    30, 2022     | 6,213,047.57                          | 955,108.93                   | 7,168,156.50                         
|December
    31, 2022 | 6,213,047.
    86                     | 955,108.97                   | 7,168,156.83                         
|June
    30, 2023     | 6,517,854.
    42                     | 650
    ,302. 08             | 7,168,156.50                         
|December
    31, 2023 | 6,517,854.
    72                     | 650,302.
    11              | 7,168,156.83                         
|June
    30, 2024     | 6,837,614.
    83                     | 330,541.67                   | 7,168,156.50                         
|December
    31, 2024 | 6,837,615.
    14                     | 330,541.69                   | 7,168,156.83                         
|Total                 | 73,200,000.00                         | 13,017,879.98                | 86,217,879.98                        



Party
A’s bank account information:



Account
name: People.cn Co., Ltd.

Bank:
China Everbright Bank, Jianguomen Sub-branch, Beijing

Account number: 35050188000018083













III. Collaterals



The two parties agree
that Party B shall initially provide Party A with real rights of movables having value no less than RMB30,000,000.00 (in words:
RMB THIRTY MILLION ONLY, of which RMB14,540,000.0 must be valued by an appropriate third party) as collaterals which are legally
owned by Party B or its affiliate Beijing Blue I.T. Technologies Co., Ltd. and are free of any encumbrances to ensure the credit
assets hereunder will be paid in full and on a timely basis. And no later than October 30, 2019, Party B shall provide Party A
with real rights of immovables having value no less than RMB73,200,000.00 (in words: RMB SEVENTY THREE MILLION TWO HUNDRED THOUSAND
ONLY) as collaterals for the debt which are perfect and free of any encumbrances, and such immovables must be valued by a third
party appraiser. The movable collaterals hereunder will be discharged as of the date of creation of the immovable collaterals.
All matters in relation to the collaterals are subject to a mortgage agreement otherwise entered into between the two parties.



Party B shall provide
Party A with a List of Mortgaged Properties before March 29, 2019 and assist Party A in completing appraisals.



IV. Taxes



It is agreed that
with respect to the cost for using funds hereunder, Party A shall issue an invoice which is complete and correct and conforms to
appropriate requirements of the national tax authority to Party B, and such invoices shall be issued and delivered to Party B five
(5) working days before each repayment date.



V. Liabilities
for breach of contract



In case Party B fails
to perform its obligations to make repayments on time or to provide collaterals as agreed herein, Party A is entitled to exercise
one or more of the following rights:



| | (1) | Require Party B to rectify its breaches within a given time limit;
| | --- | ------------------------------------------------------------------



| | (2) | Declare maturity of the debt in its entirety hereunder with immediate effect, and repay the debt
in its entirety and corresponding debt expenses within a given time limit on Party A’s demand;
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (3) | Pay liquidated damages to Party A equivalent to 20% of the total amount of debt;
| | --- | --------------------------------------------------------------------------------



| | (4) | Exercise the right to dispose of the collaterals and require Party B to provide assistances in
exercising the right.
| | --- | --------------------------------------------------------------------------------------------------------------------















VI. Dispute settlement



Any disputes
arising during performance of this agreement shall be settled through negotiation, if no settlement is reached through
negotiation, the two parties agree to submit such disputes to the People’s Court of Chaoyang District, Beijing where
this agreement is signed, provided that statutory exclusive jurisdiction or hierarchy-based jurisdiction is not violated.



VII. Miscellaneous



1.All
and any reasonable costs incurred by Party A for realization of creditor’s rights (including but not limited to legal cost,
property preservation fee, travel expense, enforcement fee, evaluation cost, auction fee, notarial fee, announcement fee, attorney’s
fee) shall be on the account of Party B.



2.This
agreement is executed in four copies, two copies for each of the two parties and all copies having the same legal force, and will
become effective when it is signed and sealed by both parties and approved by the board of Party A and remain effective until
the obligations of the two parties hereunder are completely and correctly fulfilled.



(No main body of text below,
signature page follows)





|Creditor: People.cn Co., Ltd.           |  | Debtor: ChinaCache Xin Run Technology (Beijing) Co., Ltd.
|--------------------------------------- |  | ---------------------------------------------------------
|                                        |  |                                                          
|Seal:                                   |  | Seal:                                                    
|                                        |  |                                                          
|Signature of authorized representative: |  | Signature of authorized representative:                  
|                                        |  |                                                          
|Date: April 3, 2019                     |  |