Located in the land of Fire, Hidden Leaf Village (also called Konoha) is the largest and most powerful of all Hidden Shinobi Villages, despite the fact that the land of Fire isn't the largest country. But due to the hidden village's large population, its military presence is very powerful.
The Leaf's most distinguishing characteristic is the mountain overlooking the village. It has the faces of every Hokage incarved in it. Tsunade's face is added sometime during the timeskip.
win 3 battles in a row with all leaf nin in your team for entrance
Win 4 battles in a row with lee and any 2 leaf nin in your team and battle a clan member 2/3 and he will judge you ,beating is not important
For jounin:-
Win 6 battles in a row with any two koknoha jounins in your team