SCHEDULE 13G/A 0001493152-24-040825 0002036938 XXXXXXXX LIVE 1 Ordinary shares, par value US$0.000005 per share 03/31/2025 0001954694 Lucas GC Ltd G57037106 Room 5A01, 4th Floor, Air China Building Xiaoyun Road, Chaoyang Beijing F4 100027 Rule 13d-1(d) Howard Lee X1 48424333.00 0.00 48424333.00 0.00 48424333.00 N 60.9 IN (1) Represents 48,424,333 ordinary shares of the Issuer held of record by HTL Lucky Holding Limited, a British Virgin Islands company, wholly owned by HTL Star Holding Limited. HTL Star Holding Limited is wholly owned by Mr. Howard Lee. (2) Percentage is calculated based on 79,467,057 ordinary shares of the Issuer issued and outstanding (excluding 96,243 ordinary shares repurchased as treasury shares) as of March 31, 2025, as reported by the Issuer on its annual report on Form 20-F for the fiscal year ended December 31, 2024 filed with the Securities and Exchange Commission on March 31, 2025 (the "Form 20-F"). HTL Star Holding Limited D8 48424333.00 0.00 48424333.00 0.00 48424333.00 N 60.9 CO (1) Represents 48,424,333 ordinary shares of the Issuer held of record by HTL Lucky Holding Limited, a British Virgin Islands company wholly owned by HTL Star Holding Limited. (2) Percentage is calculated based on 79,467,057 ordinary shares of the Issuer issued and outstanding (excluding 96,243 ordinary shares repurchased as treasury shares) as of March 31, 2025, as reported by the Issuer on the Form 20-F. HTL Lucky Holding Limited D8 48424333.00 0.00 48424333.00 0.00 48424333.00 N 60.9 CO (1) Represents 48,424,333 ordinary shares of the Issuer held of record by HTL Lucky Holding Limited. (2) Percentage is calculated based on 79,467,057 ordinary shares of the Issuer issued and outstanding (excluding 96,243 ordinary shares repurchased as treasury shares) as of March 31, 2025, as reported by the Issuer on the Form 20-F. Lucas GC Ltd ROOM5A01, 4TH FLOOR, AIR CHINA BUILDING, XIAOYUN ROAD, CHAOYANG, BEIJING, F4, 100027 Howard Lee HTL Star Holding Limited HTL Lucky Holding Limited Howard Lee: Room 5A01, 4th Floor, Air China Building, Xiaoyun Road, Sanyuanqiao, Chaoyang District, Beijing 100027, China HTL Star Holding Limited: ICS Corporate Services (BVI) Limited Sea Meadow House, P.O. Box 116, Road Town, Tortola, British Virgin Islands HTL Lucky Holding Limited: ICS Corporate Services (BVI) Limited, Sea Meadow House, P.O. Box 116, Road Town, Tortola, British Virgin Islands Howard Lee: United States of America HTL Star Holding Limited: British Virgin Islands HTL Lucky Holding Limited: British Virgin Islands Y See the response to Item 9 on the attached cover pages. See the response to Item 11 on the attached cover pages. See the response to Item 5 on the attached cover pages. See the response to Item 6 on the attached cover pages. See the response to Item 7 on the attached cover pages. See the response to Item 8 on the attached cover pages. Y Y Y Y Y Y Joint Filing Agreement (incorporated by reference to Exhibit 99.1 of Schedule 13G filed by the Reporting Persons on October 11, 2024) Howard Lee /s/ Howard Lee 05/12/2025 HTL Star Holding Limited /s/ Howard Lee 05/12/2025 HTL Lucky Holding Limited /s/ Howard Lee 05/12/2025