China's National Supercomputing Center has introduced LineShine, an exascale supercomputer boasting a potential 2 exaflops of sustained performance, potentially surpassing the US's El Capitan, which currently leads with 1.8 exaflops. LineShine, also known as Lingsheng, is powered by 47,000 Huawei LX2 Armv9 CPUs, each with 304 cores, marking a significant step in China's pursuit of "full-stack independence" in computing technologies. The system's architecture includes 92 compute cabinets, offering 10 TB/s of storage bandwidth and 650 petabytes of capacity, with full deployment expected by the end of 2025. Despite its ambitious claims, LineShine's performance remains unverified by independent benchmarks like the Linpack test, which confirms El Capitan's standing. China's reluctance to submit its systems to the TOP500 list adds to the skepticism surrounding LineShine's capabilities. This development comes amid tightened US export controls on advanced semiconductors to China, highlighting LineShine as a domestic alternative in the global chip landscape. The supercomputer's potential impact on quantum and post-quantum cryptography could influence future advancements in crypto and AI computing.