A colossal star with a mass exceeding 20 times that of the sun exhausted its nuclear fusion fuel about 2 billion years ago, and unleashed a massive explosive fireball at the moment of collapse, resulting in a spectacular “hypernova” that lasted for hundreds of seconds. This cosmic fireworks show produced a gamma-ray burst (hereinafter referred to as GRB), the most powerful type of electromagnetic radiation in the universe. A large number of tera-electron-volt high-energy gamma photons generated by the collision between the fireball and the interstellar matter traversed the vast cosmos, soared towards the earth, and finally reached the field of view of “LHAASO”, the China High Altitude Cosmic Ray…