From imported screws to self‑made systems – how did China's laser industry achieve global leadership? CGTN reporter He Jingyi visited HGTECH at Optics Valley in Wuhan, China, to see how it broke technical barriers, controlled key components and leveraged the unified national market to power sectors from EVs to aerospace. Building this market aims to use China's vast demand as a "training ground" for globally competitive firms and boost dual circulation.