The reporter learned from China Telecom on the 14th that China Telecom Quantum Group recently released the world's first distributed cryptographic system integrating QKD and PQC. The system innovatively integrates QKD and PQC technologies to provide users with end-to-end quantum computing-resistant key distribution and key life cycle management, and has commercial capabilities. At the same time, the world's first cross-domain quantum secret phone call based on a distributed cryptographic system integrating QKD and PQC was successfully connected across more than 1,000 kilometers. At present, the system architecture has been verified in multiple scenarios, and with the official launch of the existing network, it marks that my country's integrated cryptographic technology system based on "QKD+PQC" has officially entered a new stage of large-scale commercial use, and it also indicates that the new generation of quantum security infrastructure has achieved a systematic technological breakthrough.