Item 4.01. Changes in Registrant’s Certifying Accountant.
On August 3, 2021, the Audit Committee of the
Board of Directors (the “Audit Committee”) of Greencity Acquisition Corporation (the “Company”) approved the engagement
of Friedman LLP (the “Successor Auditor” or “Friedman”) as the Company’s new independent registered public
accounting firm for the year ending December 31, 2021, effective immediately. In connection with the selection of Friedman,
the Audit Committee dismissed Marcum LLP (“Marcum”) as the Company’s independent registered public accounting firm on
August 3, 2021.
During the years ended December 31, 2020 and 2019,
and the subsequent interim period through August 3, 2021, there were no disagreements (as defined in Item 304(a)(1)(iv) of Regulation
S-K and related instructions) with Marcum on any matter of accounting principles or practices, financial statement disclosure, or auditing
scope or procedure, which disagreements, if not resolved to the satisfaction of Marcum, would have caused Marcum to make reference to
the subject matter of the disagreement in their reports.
Marcum’s report of independent registered
public accounting firm, dated March 31, 2021, except for the effects of the restatement discussed in Note 2, 3 and 10 as to which the
date is July 26, 2021 on the Company’s balance sheets as of December 31, 2020 and 2019, the related statements of operations, changes
in stockholders’ equity (deficit) and cash flows for the years ended December 31, 2020 and December 31, 2019, and the related notes
to the consolidated financial statements did not contain any adverse opinion or disclaimer of opinion, nor was it qualified or modified
as to uncertainty, audit scope or accounting principles, except that such report contained an explanatory paragraph in which Marcum expressed
substantial doubt about the Company’s ability to continue as a going concern and other than with respect to the restatement of the
Company’s financial statements for the year ended December 31, 2020, as discussed in Note 2 to the financial statements included
in the Company’s Annual Report on Form 10-K/A, filed with the Securities and Exchange Commission (the “SEC”) on July
26, 2021.
During the fiscal years ending December 31, 2020
and December 31, 2019 and the subsequent interim period through August 3, 2021, there were no “reportable events” (as defined
in Item 304(a)(1)(v) of Regulation S-K), other than the material weakness in internal controls identified by management related to the
accounting for the warrants issued in connection with the Company’s initial public offering, which resulted in the restatement of
the Company’s financial statements for the year ended December 31, 2020, as set forth in the Company’s Form 10-K/A, as
filed with the SEC on July 26, 2021.
The Company provided Marcum with a copy of this
Form 8-K and requested that Marcum provides the Company with a letter addressed to the Securities and Exchange Commission stating whether
it agrees with the above statements. A copy of Marcum’s letter is furnished as Exhibit 16.1 to this Form 8-K.
During the years ended December 31, 2020 and 2019,
and the subsequent interim period through August 3, 2021, neither the Company nor anyone on its behalf has consulted Friedman with respect
to either (i) the application of accounting principles to a specified transaction, either completed or proposed, or the type of audit
opinion that might be rendered on the Company’s consolidated financial statements or the effectiveness of internal control over
financial reporting, where either a written report or oral advice was provided to the Company that Friedman concluded was an important
factor considered by the Company in reaching a decision as to any accounting, auditing or financial reporting issue; or (ii) any matter
that was either the subject of a disagreement (as defined in Item 304(a)(1)(iv) of Regulation S-K and related instructions) or a reportable
event (as defined in Item 304(a)(1)(v) of Regulation S-K).