During a mission, Chen Minxuan rescued an Indian girl, helped them protect an astrolabe, and was recognized by two green worms in the astrolabe. Astrolabes and caterpillars are both technological products of high-level civilizations. Through the guidance of astrolabes and caterpillars, Chen Minxuan and his partners embarked on a future technological innovation process, and at the same time they were involved in wars between civilizations of different levels...