Guangdong Sinong Certified Public Accountants LLP GUANGDONG SINONG CERTIFIED PUBLIC ACCOUNTANTS LLP Internal Control Audit Report Sinong Shen Zi [2026] No. 25008370060
To all shareholders of Yitong Century Technology Co., Ltd.:
In accordance with the "Audit Guidelines for Enterprise Internal Control" and the relevant requirements of the Chinese Certified Public Accountants' Professional Standards, we have audited the effectiveness of the financial reporting internal controls of Yitong Century Technology Co., Ltd. (hereinafter referred to as "Yitong Century") as of December 31, 2025.
I. Responsibility for Internal Control