[Sci-Tech Innovation Board 50 Index rises 4.78%, storage chip and precious metals concepts strengthen] BlockBeats News, on August 5, the three major A-share indices opened lower and collectively moved upward. By the close, the Shanghai Composite Index rose 1.47%, the Shenzhen Component Index rose 1.86%, and the ChiNext Index rose 1.32%. The Sci-Tech Innovation Board 50 Index rose 4.78%. The total trading volume of the Shanghai and Shenzhen markets reached 2.66 trillion yuan, an increase of 446 billion yuan compared to the previous trading day. The storage chip concept remained strong throughout the day, with Zhengfan Technology hitting a 20% limit-up; the lithography machine concept was active, with Vog Photonics achieving two consecutive limit-ups; the precious metals concept strengthened, with Sichuan Gold and others hitting limit-ups.