What was his purpose? Yinsen did not really have any particular purpose. Over this period, he had gradually sorted through the information. Hippolyta and Antiope before him looked rather familiar, so this world was very likely the Movie Version of Wonder Woman... or rather, the DC Movie Universe.
"First Marvel, then DC?"
Yinsen did not know whether this Space-Time Energy was doing it deliberately, and this point in time made him feel especially miserable.
"Diana is still just a little brat. Forget Batman and Superman—who knows how long it will be before Wonder Woman's story even begins? I can't catch up to any of it."
As he used Space-Time Energy more often, Yinsen grew increasingly familiar with it. He could now suppress the energy within his body and keep it from dissipating rapidly, preserving it in the Magic Array on his hand for longer and giving himself more time to explore, familiarize himself with, and master this energy.
That also allowed him to remain in these planes longer. But even so, his stay had never exceeded a month. The fundamental issue was that the total amount of Space-Time Energy he absorbed was never very high. No matter how carefully he controlled it to prevent dissipation, there would always come a day when it was gradually used up.
Unless Yinsen could completely control it himself and produce this energy with his own body. Or he could figure out what was consuming the Space-Time Energy and find a corresponding substitute.
Yinsen had a whole pile of problems to solve. He truly had no particular designs on Themyscira.
"If possible, I would like to live nearby for a while. Once my magic power recovers, I will use Teleportation Magic to leave." Afraid that Hippolyta would refuse, Yinsen immediately left himself some room to