2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/102489We discuss the four requirements for a real point-to-point quantum secure direct communication (QSDC) first, and then present two efficient QSDC network schemes with an N ordered Einstein-Podolsky-Rosen pairs. Any one of the authorized users can communicate another one on the network securely and directly.7 pages, one figureQuantum Physicstext