EXHIBIT 15.4

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CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

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We have issued our report dated March 29, 2021, with respect to the consolidated financial statements included in the Annual Report of The9 Limited on Form 20-F for the year ended December 31, 2021. We consent to the incorporation by reference of the said report in the Registration Statements of The9 Limited on Form F-3 (File No. 333-254878) and Forms S-8 (File Nos. 333-127700, 333-156306, 333-168780, 333-210693, 333-217190, 333-231105 and 333-259135).

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/s/ GRANT THORNTON

Grant Thornton

Shanghai, the People’s Republic of China

May 2, 2022