diff --git a/academic_codes/2021.12.27_Chern_numbers_of_Landau_levels/Chern_numbers_of_Landau_levels_in_honeycomb_lattice.py b/academic_codes/2021.12.27_Chern_numbers_of_Landau_levels/Chern_numbers_of_Landau_levels_in_honeycomb_lattice.py
index 395a35e..673b5a2 100644
--- a/academic_codes/2021.12.27_Chern_numbers_of_Landau_levels/Chern_numbers_of_Landau_levels_in_honeycomb_lattice.py
+++ b/academic_codes/2021.12.27_Chern_numbers_of_Landau_levels/Chern_numbers_of_Landau_levels_in_honeycomb_lattice.py
@@ -39,7 +39,7 @@ def hamiltonian(kx, ky, Ny, a, B):
 
 
 def main():
-    Ny = 10
+    Ny = 5
     a = 1
 
     k_array = np.linspace(-pi, pi, 100)
diff --git a/academic_codes/2021.12.27_Chern_numbers_of_Landau_levels/Chern_numbers_of_Landau_levels_in_square_lattice.py b/academic_codes/2021.12.27_Chern_numbers_of_Landau_levels/Chern_numbers_of_Landau_levels_in_square_lattice.py
index 5efc827..f19bda6 100644
--- a/academic_codes/2021.12.27_Chern_numbers_of_Landau_levels/Chern_numbers_of_Landau_levels_in_square_lattice.py
+++ b/academic_codes/2021.12.27_Chern_numbers_of_Landau_levels/Chern_numbers_of_Landau_levels_in_square_lattice.py
@@ -25,7 +25,7 @@ def hamiltonian(kx, ky, Ny, B):
 
 
 def main():
-    Ny = 40
+    Ny = 20
 
     k_array = np.linspace(-pi, pi, 100)
     H_k = functools.partial(hamiltonian, ky=0, Ny=Ny, B=1/Ny)