Chongqing Development: Announcement on participating in the 2026 Investor Online Collective Reception Day and Semi-annual Performance Briefing Event of Listed Companies in Chongqing

Securities code: 000514 Securities abbreviation: Chongqing Development Announcement number: 2026-058

Chongqing Yu Development Co., Ltd.

Announcement on participating in the "2026 Investor Online Collective Reception Day and Semi-annual Performance Briefing Event for Listed Companies in Chongqing"

The company and all members of the board of directors guarantee that the information disclosed is true, accurate and complete, and that there are no false records, misleading statements or major omissions.

In order to further improve the company's investor relations management level and rely on the investor interaction platform to promote the company's high-quality development, the company will participate in the "2026 Investor Online Collective Reception Day and Semi-annual Performance Briefing Event for Listed Companies in Chongqing" organized by the Chongqing Listed Companies Association and Shenzhen Panoramic Network Co., Ltd. on September 23, 2026 (Wednesday) from 15:30 to 17:00.

This investor reception event will be held in the form of online communication. Investors can log in to the "Panorama Service Platform" (http://rs.p5w.net) to enter the company's interactive platform to participate in interactive communication. Ms. Li Xingyi, secretary of the company's board of directors and chief financial officer, will communicate with investors online. Investors are welcome to actively participate!

Announcement hereby

Board of Directors of Chongqing Yu Development Co., Ltd.

September 16, 2026