Regarding this acquisition of professional knowledge, the Worm Emville remembers it deeply, not because the knowledge is extremely important, but because it has a profound memory of all its memories.
It was at an interstellar transfer station when it encountered a planetary civilization wandering due to the explosion of the star system's fixed star, forcing them to choose a wandering planet.
That civilization's status happened to be above Level 2, yet not quite reaching Level 3.
At that time, a senior official of this wandering civilization wished to confirm the navigation route and sought an expert in the field upon recommendation and found it.
Following the principle of equivalent exchange of knowledge, it exchanged a star map and acquired 'interstellar space station manufacturing technology'.
In fact, it was more interested in obtaining the planetary engine technology from them, as every wandering-type civilization is extremely adept in 'cosmic navigation'.
