Core Viewpoint - The recent issuance of the "Opinions on Deepening Reform and Innovation to Expand Opening Up in Shenzhen Comprehensive Reform Pilot" by the Central Committee and the State Council allows enterprises from the Guangdong-Hong Kong-Macao Greater Bay Area listed on the Hong Kong Stock Exchange to list on the Shenzhen Stock Exchange according to policy regulations, which is expected to facilitate the secondary listing of red-chip companies in Shenzhen [1]. Group 1: Regulatory Framework - The rules for red-chip companies listed in Hong Kong to return to the Shenzhen Stock Exchange have been clarified, with a focus on the differences between red-chip and H-share structures [2]. - The top-level design for red-chip companies indicates that they can apply for secondary listings in the domestic capital market, with specific guidelines established since 2018 [3]. - The Shenzhen Stock Exchange has set clear standards for red-chip companies seeking secondary listings, including a minimum market capitalization of 200 billion yuan for the main board and specific technological and competitive advantages [3]. Group 2: Listing Requirements - The requirements for red-chip companies on the Growth Enterprise Market (GEM) focus on those not previously listed abroad, with standards including rapid revenue growth and a projected market value of at least 100 million yuan [4]. - Companies with recent revenue below 5 million yuan must demonstrate a compound annual growth rate (CAGR) of over 20% over the last three years to qualify for listing [5]. Group 3: Historical Context and Market Impact - Historical data suggests that the return of high-quality red-chip stocks can boost A-share market valuations, as seen in 2020 when the return of companies like SMIC significantly impacted market performance [6][7]. - The successful return of red-chip companies has previously enhanced market activity, contributing to a notable rise in the Shanghai Composite Index during the period of these listings [7].