(From MC's perspective)
As time went on, I immersed myself in reading books in a library. So much for that, I didn't go for lunch in the afternoon. The deep knowledge in those books kept me occupied.
Slowly I realized the value of potion-making. If you can master and gain some skill in this field. Then you don't have to go on missions to earn money.
Some master potion makers make money by simply getting patents for one or two important potion liquids. A quick gleam flashed in my eyes.
But unfortunately, I'm not talented in this field. Apart from the talent, I don't have any interest in wasting so much time on that. Because learning potion-making is done by burning a lot of resources.
So it is not easy to get a start in the first place. Then shaking my head, I made up my mind to try other methods. For example, the book "Treasure Land" contains a lot of information about the ancient era.