Compared to the three architectural design plans that made Gu Xi's heart flutter, when the two plans that Gu Xi couldn't understand appeared, his first reaction was, how can there be such things.
The second reaction was to wonder what these things were used for.
[Energy Lighthouse Design Plan (Small): Use 300 resources, 10 units of metal, can build an Energy Lighthouse (small building) in the city to acquire energy from a region and illuminate an area.]
This lighthouse puzzled Gu Xi because he couldn't determine from the description whether it was useful or what its function was.
Similarly, another confusing item for Gu Xi was.
[Tree Demon Jungle Design Plan (Medium): Use 500 resources, 10 units of herbs, 10 units of wood, to build a Tree Demon Jungle (medium building) in the city, which can be entered once a month to defeat the guards inside and obtain the appropriate amount of treasure.]
