Group 1 - The three major indices opened slightly lower on May 23 but experienced a rebound, with energy metals and rare metals sectors showing upward movement, particularly driven by the controllable nuclear fusion concept [1] - The Rare Metals ETF (562800) saw a rise of over 1% as of the report, with significant premium trading observed during the session. Notably, it recorded a net inflow of 3.62 million yuan on May 22 [1] - Companies such as Dongfang Tantalum Industry, Tianqi Lithium, Dongfang Zirconium, and Huayou Cobalt experienced notable gains, with Dongfang Tantalum Industry rising over 6% [1] Group 2 - CITIC Securities recommends focusing on key materials and devices within the fusion industry chain, highlighting that global fusion research is primarily centered on magnetic confinement and inertial confinement fusion technologies [2] - The Tokamak device is identified as the optimal solution for achieving magnetic confinement fusion reactions, with core components including superconducting magnets, vacuum containers, and cooling systems, which account for over 50% of construction costs [2] - The fusion industry chain also involves upstream material segments, including special metals and superconducting strips, with special metals comprising special steel, tungsten, and copper, while superconducting strips are categorized into low-temperature and high-temperature superconducting materials [2]