According to CoinMeta, China Mobile recently collaborated with partners to achieve real-time transmission of a 1.6Tb/s signal over a single wavelength on backbone long-distance G.652.D fiber optic cables using 230GBaud key technology, setting a new record for the longest 1.6T transmission over 960km. This achievement has significantly advanced the technical performance of 1.6T optical transmission systems. Driven by the explosive development of AI technology and applications, T-bit-level high-speed transmission technology for interconnecting intelligent computing centers is evolving rapidly. With 1.6T serving as the next-generation speed evolution target beyond 400G, it has reached industry consensus among standardization organizations such as ITU-T and OIF.