but through his intellectual qualities and ambitions, he soon assisted the leading architects and got his training as an architect.

During the next six years, he also trained to be a Janissary officer (acemioglan). He possibly joined Selim I in his last military campaign, Rhodes according to some sources, but when the Sultan died, this project ended. Two years later he witnessed the conquest of Belgrade. Under the new sultan, Suleiman the Magnificent,