Announcement on Progress of External Guarantees

Securities Code: 301563

Securities Abbreviation: Yunhan Core City

Announcement No.: 2026-031

Yunhan Core City (Shanghai) Internet Technology Co., Ltd.

Announcement on Progress of External Guarantees

The Company and the Board of Directors guarantee that the information disclosed is true, accurate, and complete, and that there are no false records, misleading statements, or material omissions.

Special Reminder:

The party being guaranteed in this instance is Yunhan Core City (Shanghai) Internet Technology Co., Ltd. (hereinafter referred to as the "Company")'s wholly-owned subsidiary, Yunhan Core City (Shanghai) Electronics Technology Co., Ltd. (hereinafter referred to as "Yunhan Electronics"). Its latest asset-liability ratio is 72.97%. After this guarantee, the balance of guarantees actually provided by the Company to Yunhan Electronics accounts for 159.31% of the Company's net assets as per the latest audited financial statements.

I. Overview of Guarantee Situation

The Company held its Third Meeting of the Fourth Board of Directors on April 13, 2026, and its 2025 Annual Shareholders' Meeting on May 15, 2026, and approved the "Proposal on the Estimated Quota for External Guarantees in 2026." Based on the 2026 operating plan and capital needs, the Company's Board of Directors agreed to provide a total credit line of no more than RMB 2,500 million (or equivalent foreign currency) in joint liability guarantees for the credit lines of its subsidiaries (including subsidiaries of subsidiaries) to support the business development of its subsidiaries. Among these, a total credit line of no more than RMB 200 million is provided for Yunhan Electronics' credit lines. The validity period of the above quota is 12 months from the date of approval by the Shareholders' Meeting. For details, please refer to the "Announcement on the Estimated Quota for External Guarantees in 2026" (Announcement No.: 2026-017) disclosed by the Company on the Juchao Information Network (www.cninfo.com.cn) on April 15, 2026.

II. Progress of Guarantee Situation

Recently, the Company signed a "Maximum Amount Guarantee Contract" with the Shanghai North Branch of Industrial Bank Co., Ltd. (hereinafter referred to as "Industrial Bank"), providing a joint liability guarantee for Yunhan Electronics' loan application to Industrial Bank with a maximum principal amount of RMB 25 million. The Company issued a "Maximum Irrevocable Guarantee Letter" to China Merchants Bank Co., Ltd. Shanghai Branch (hereinafter referred to as "China Merchants Bank"), providing a joint liability guarantee for Yunhan Electronics' loan application to China Merchants Bank with a maximum amount of RMB 30 million. The Company signed a "Maximum Amount Guarantee Contract" with the Shanghai Yangtze River Delta Integration Demonstration Zone Branch of Shanghai Rural Commercial Bank Co., Ltd. (hereinafter referred to as "Shanghai Rural Commercial Bank"), providing a joint liability guarantee for Yunhan Electronics' loan application to Shanghai Rural Commercial Bank with a maximum guaranteed debt balance of RMB 15 million.

After the above three guarantees (hereinafter referred to as "this guarantee"), the details of the Company's guarantees for Yunhan Electronics are as follows: