Search Along the Route

Zhang Zian had a picture editing app on his cellphone. He tried planning out a route several times on that app and finally got a satisfying solution. He saved the map with the route.

It wasn't a perfect route because he might not be able to search the fields on the sides, behind, or even on the roofs of the buildings. He tried. If he couldn't find the Elfin after going through the whole route, he would have to think of other routes. Regarding the roof, Zhang Zian guessed that it was locked because the school didn't want students to have access to it in case they jumped off the building to commit suicide.

Galaxy was afraid of people, so it was a special example. For Fina and Old Time Tea, they had both appeared in a place where people were. They turned into Elfins due to people's worship. Therefore, Zhang Zian thought that the next Elfin was less likely to appear in an empty classroom… unless the Elfin was also afraid of people.