diff --git a/__pycache__/tile.cpython-312.pyc b/__pycache__/tile.cpython-312.pyc
new file mode 100644
index 0000000..d19848b
Binary files /dev/null and b/__pycache__/tile.cpython-312.pyc differ
diff --git a/__pycache__/tile_grid.cpython-312.pyc b/__pycache__/tile_grid.cpython-312.pyc
new file mode 100644
index 0000000..5b447c4
Binary files /dev/null and b/__pycache__/tile_grid.cpython-312.pyc differ
diff --git a/tile_grid.py b/tile_grid.py
index 72a0f43..6a07140 100644
--- a/tile_grid.py
+++ b/tile_grid.py
@@ -10,7 +10,8 @@ from tile import fly
 def draw_tile_grid(width, height, tile_size, tile_function):
     """Draws a (width x height) grid, with tile_function drawn on each tile.
 
-    (Your explanation here.)
+    (First, for x in range width, draw a tile defined by tile_size, then draw the curve by calling fly function.
+    After that, return to the original position to repeat the process. When x and y come to the number we input, it will stop.)
     """
     for y in range(height):
         for x in range(width):