Helen Piano Co., Ltd.

Continuous Supervision Opinions for the Detailed Report on Equity Changes of Quantuo Zhuodai (Shanghai) Enterprise Management Center (Limited Partnership) for 2025 and Q1 2026 by Shouchuang Securities Co., Ltd.

Legal Opinion on the 2025 Annual Shareholders' Meeting of Hailun Piano Co., Ltd. by Guohao Law Firm (Hangzhou)

Announcement of Resolutions from the 2025 Annual Shareholders' Meeting of the Company

Reminder Announcement for the 2025 Annual Shareholders' Meeting

Announcement on the Pledge of Shares by the Company's Controlling Shareholder

Announcement of Resolutions from the 19th Meeting of the 6th Board of Directors

Q1 2026 Report

Announcement on the Company's Reappointment of Accounting Firm for 2026

Yian Technology's Board of Directors Work Report for 2025

Announcement on the Company's Remuneration Plan for Directors and Senior Management for 2026

Financial Settlement Report for 2025

Independent Director 2025 Annual Work Report (Wang Xiwei)

Independent Director 2025 Annual Work Report (Yang Yifu)

Independent Director 2025 Annual Work Report (Wang Weiliang)

Announcement on Holding the 2025 Performance Online Presentation

Internal Control Audit Report for 2025

Yian Technology's Self-Evaluation Report on Internal Control for 2025

Announcement on the Company's Provision for Asset Impairment

Announcement on Yian Technology's Expected Daily Related Transactions for 2026

Announcement on Related Parties Providing Loans to the Company and Guarantees by the Company and its Subsidiaries

Notice of Convening the 2025 Annual Shareholders' Meeting

Announcement of the Resolution of the 18th Meeting of the 6th Board of Directors

Announcement on the Company's Profit Distribution Plan for 2025

Report of the Audit Committee of the Board of Directors on the Evaluation of the Accounting Firm's Performance in 2025 and Supervision Responsibilities

Special Audit Report on the Summary Table of Non-Operating Fund Occupation and Other Related Fund Transactions for 2025

Summary Table of Non-Operating Fund Occupation and Other Related Fund Transactions

Special Opinion of the Board of Directors on the Independence of Independent Directors

2025 Annual Audit Report

2025 Annual Report

Summary of the 2025 Annual Report

Announcement on the Pledge of Certain Shares by the Company's Controlling Shareholder

Resolution Announcement of the 17th Meeting of the Sixth Board of Directors

Company's Announcement on Not Needing to Prepare a Report on the Use of Previous Raised Funds

Company's Shareholder Dividend Return Plan for the Next Three Years (2026-2028)

Company's Announcement on Regulatory Measures or Penalties Taken by Securities Regulatory Authorities and Exchanges in the Past Five Years (1)

Company's Announcement on Dilution of Immediate Returns, Remedial Measures, and Commitments by Related Parties for the Issuance of Shares to Specific Objects

Helen Piano Co., Ltd.'s Indicative Announcement on the Disclosure of the Plan for Issuing Shares to Specific Objects

Company's Feasibility Analysis Report on the Use of Proceeds from the 2026 Issuance of Shares to Specific Objects (2)

Company's Analysis Report on the Feasibility of the 2026 Plan for Issuing Shares to Specific Objects

Company's Announcement on Convening a Shareholder Meeting at a Later Date

Announcement on the Company Signing the 'Share Subscription Agreement with Effectiveness Conditions' with Specific Objects and Related Party Transactions (1)

Company's 2026 Plan for Issuing Shares to Specific Objects

Company's Announcement on the Absence of Direct or Indirect Financial Assistance or Compensation Provided to Participating Investors by the Company or Related Parties in this Issuance of Shares to Specific Objects

Company's Indicative Announcement on the Issuance of Shares to Specific Objects Resulting in Changes in Shareholder Equity

Company Announcement on Change of Signing Accountant