The first condition is to complete all elf missions and resurrect to 99%. I have been practicing steaming water for the first year, and I have been practicing water at the master level. I can take wood to the nearest forest. Then the next year, I did the elf task and took 700 plant nutrient solutions.
The second condition is because you need the prince's favor and the book Farah gave you.
The third condition is to practice the "rising sun" until the resurrection reaches a certain level. There will be seven elves in the elf forest, and they will tell you to practice the materials of The Rising Sun separately, and the practice will be over.