Yes, Hikaru intended to use the normal greenhouse as a building to serve the needs of the inhabitants of the territory.
Darang is a builder; after building the greenhouse, he can definitely create another drawing like the greenhouse. At that time, Hikaru can use the new drawing as raw material to fuse with the lighthouse and many other types of buildings.
After successfully fusing them, he will consider its use and use it appropriately.
Hikaru said with a smile, "Good, now the issue of food and seeds is resolved. However, Darnag, I hope you can strike a balance between work and rest. Do you understand?"
Darnag bowed his head and said, "Yes, I understand. Thank you, master, for your concern."
Hikaru nodded: "It's not over yet. Sit down and listen to my next order."
When Darnag heard that, he immediately took out a scroll and used magic to write on the scroll everything Hikaru had said.