Beijing King & Wood Law Firm
KING&WOOD
Regarding the Issuance of Convertible Bonds by STO Express Co., Ltd. to Unspecified Targets
Supplementary Legal Opinion (I)
To: STO Express Co., Ltd.
Beijing King & Wood Law Firm (hereinafter referred to as "the Firm") has been retained by STO Express Co., Ltd. (hereinafter referred to as "STO Express/Company/Issuer") to serve as the special legal advisor for the Issuer's proposed issuance of convertible bonds to unspecified targets (hereinafter referred to as "this Offering").
The Firm, in accordance with the "Company Law of the People's Republic of China," the "Securities Law of the People's Republic of China," the "Administrative Measures for the Registration of Securities Issuances by Listed Companies" (hereinafter referred to as the "Registration Measures"), the "Administrative Measures for Law Firms Engaging in Securities Legal Business," the "Administrative Measures for Convertible Corporate Bonds," the "Practice Rules for Securities Legal Business of Law Firms (Trial)," and the "Information Disclosure Compilation Rules for Public Offerings of Securities by Securities Companies No. 12 — Legal Opinions and Lawyer's Work Reports on Public Offerings of Securities," and other currently effective laws, administrative regulations, departmental rules, and normative documents within China (within the territory of the People's Republic of China, excluding the Hong Kong Special Administrative Region, the Macao Special Administrative Region, and Taiwan Province of China), as well as relevant regulations of the China Securities Regulatory Commission (hereinafter referred to as the "CSRC") and the Shenzhen Stock Exchange (hereinafter referred to as the "SZSE"), and in accordance with the universally recognized business standards, ethical norms, and diligence and conscientiousness principles of the legal profession, has issued the "Beijing King & Wood Law Firm's Legal Opinion on the Issuance of Convertible Bonds by STO Express Co., Ltd. to Unspecified Targets" (hereinafter referred to as the "Legal Opinion") and the "Beijing King & Wood Law Firm's Lawyer's Work Report on the Issuance of Convertible Bonds by STO Express Co., Ltd. to Unspecified Targets" (hereinafter referred to as the "Work Report") on May 15, 2026.
The Firm has now issued this Supplementary Legal Opinion in response to the "Inquiry Letter Regarding the Application for Issuance of Convertible Bonds by STO Express Co., Ltd. to Unspecified Targets" (Inquiry Letter [2026] No. 120035) issued by the SZSE Listing Review Center on June 17, 2026.
The premises and assumptions under which the Firm expressed its legal opinions in the "Legal Opinion" and the "Work Report" are equally applicable to this Supplementary Legal Opinion. Unless otherwise specified, the definitions used in this Supplementary Legal Opinion are the same as those in the "Legal Opinion" and the "Work Report."
This Supplementary Legal Opinion is for the sole purpose of the Issuer's Offering and shall not be used for any other purpose. King & Wood agrees to have this Supplementary Legal Opinion submitted as a necessary legal document for the Issuer's Offering application, along with other application materials, and is willing to bear the corresponding legal responsibilities.
King & Wood and the handling lawyers have, in accordance with the aforementioned laws, administrative regulations, rules, normative documents, and relevant regulations of the CSRC, as well as the facts that have occurred or existed prior to the issuance date of this Supplementary Legal Opinion, strictly performed their statutory duties, adhered to the principles of diligence, conscientiousness, and good faith, conducted thorough verification and investigation of the matters related to the Issuer's Offering, and ensured that the facts determined in this Supplementary Legal Opinion are true, accurate, and complete. The conclusive opinions expressed regarding this Offering are legal and accurate, free from any false statements, misleading representations, or material omissions, and the Firm assumes corresponding legal responsibilities.