diff --git a/BinaryTree/BalanceTree/AVLTree/AVLTree的4中旋转方式.pdf b/BinaryTree/BalanceTree/AVLTree/AVLTree的4中旋转方式.pdf
index 05c78fb..fe878b5 100644
Binary files a/BinaryTree/BalanceTree/AVLTree/AVLTree的4中旋转方式.pdf and b/BinaryTree/BalanceTree/AVLTree/AVLTree的4中旋转方式.pdf differ