The sub-star in the advanced stage of civilization fell into an overall crisis due to an out-of-control accident of a nanorobot cluster, causing countless cluster balls composed of nanorobots to disperse throughout the universe. Each such cluster ball is composed of 1000 trillion nanorobots. A cluster ball can be split into sub-clusters with a number of less than 1000 trillion. After the split, the cluster with the largest number of nanorobots is called the parent cluster. Sub-clusters with fewer nanorobots than the parent cluster are controlled by the parent cluster, just like worker ants are controlled by the queen. But when the sub-clusters merge with each other and the number of nanorobots exceeds the parent cluster, the original parent cluster is automatically downgraded to sub-clusters. Therefore, when the parent clump directs the child clumps, it needs to try its best to avoid the fusion between the child clumps.
A cluster ball was scattered on the Yulu planet on the edge of the galaxy. Humanity on this planet is still in the primary stage of development, and the life of the group is deeply affected by the legend of monsters. The function of the cluster ball makes the people on this planet think that they have really seen the "monster-ridden" world that has been passed down for generations!
Purpose: Stick to kindness in the darkness