Core Insights - The LHAASO (Large High Altitude Air Shower Observatory) has made a significant discovery regarding microquasars, which are powerful particle accelerators formed by the interaction of black holes and companion stars, capable of accelerating cosmic rays to energies above the "knee" threshold, providing crucial observational evidence for understanding the role of black holes in the origin of cosmic rays [1] Group 1: Cosmic Rays - Cosmic rays are charged particles from outer space, primarily composed of various atomic nuclei, and are considered messengers of cosmic events. The origin of high-energy cosmic rays has been a longstanding mystery [5] - There is a critical turning point in the energy spectrum of cosmic rays, around 30 trillion electron volts, where the number of cosmic rays suddenly decreases, referred to as the "knee" due to its shape resembling a human knee [5] Group 2: Research Findings - The LHAASO has identified a specific type of cosmic system known as microquasars, where black holes in binary systems consume material from companion stars, ejecting some material in the form of jets. This study marks the first detection of ultra-high-energy gamma-ray signals from five microquasars [7] - The research indicates that microquasars have a significantly higher acceleration limit than supernova remnants, reaching the energy threshold of the "knee," thus establishing them as a new source of high-energy cosmic rays [7] - This discovery not only addresses the long-standing mystery of the formation of the cosmic ray "knee" but also links the "knee" structure to specific celestial bodies, namely black hole jet systems, paving a new path for understanding extreme physical processes in the universe [7]