Yi Yun: Heaven hangs down signs, revealing fortune and misfortune.
This meant that signs displayed by nature could foretell auspicious omens and calamities.
Meteor showers were a very typical celestial phenomenon.
The River Diagram mentioned: "All shooting stars are the essence of the Hook Array and the charioteer of Tianyi. A shooting star as large as a jar or urn, moving without a trace, is called a flying star. Its trail appearing in the sky is called a shooting star." In short, what descended from above was called "flowing," while what rose from below was called "flying." There was also the famous ancient astrologer Meng Kangzi, who said, "Shooting stars are connected rays of light. Those as large as melons or peaches are called envoy stars. Flying stars govern schemes. Shooting stars govern military affairs, envoy stars govern undertakings; divine by the constellations from which they emerge and enter."
If those rather obscure descriptions did not give one a clear idea, then there was only one sentence to remember—
Shooting stars governed war; seeing them was a great ill omen.
Hilda turned around and followed the direction Zheng Qing was pointing. She happened to see several meteors streak across the sky. Instinctively pushing up the mask on her face, she frowned deeply and began calculating rapidly on her fingers.
"Those are meteor showers, right?"
Zheng Qing spoke with some unease, feeling that the scene carried an inexplicable sense of déjà vu.
Astrology was part of advanced divination, and Zheng Qing had never studied it much—he could not even distinguish between names like "shooting stars," "flying stars," "comets," and "envoy stars." Among the classmates he knew, perhaps only Xiao Xiao and Jiang Yu had some understanding of this field.
According to Zheng Qing's simple understanding, every star in the sky corresponded