<p>➀ In 2013, President Xi Jinping visited Wuhan's Optics Valley Exhibition Center, where he viewed innovative achievements in fiber optic communication, 3D printing, and biomass energy.</p><p>➁ In 2018, he visited the FiberHome Technology Group and Changjiang Fiber Optics, where he learned about the development of air-core fiber technology.</p><p>➂ In 2022, at Wuhan Huagong Laser Engineering Co., Ltd., he inspected the application of laser technology in the semiconductor industry.</p><p>➃ In 2024, at the Wuhan Institute of Industrial Innovation and Development, he watched the demonstration of innovative technology supply chain platforms and achievements.</p>