How to display the grid when multiple matplotlib charts are created at the same time?

I would like to use the grid in multiple matplotlib figures, but if I just use plt.grid() the grid would only show up in one of the charts.

How can I change the code below, so that the grid shows up in both figures, please?

import matplotlib.pyplot as plt
import numpy as np

rng = np.random.default_rng(19680801)
N_points = 100000
dist1 = rng.standard_normal(N_points)

fig = plt.figure()
axis = fig.add_subplot(1,1,1)

fig1 = plt.figure()
ax = fig1.add_subplot(1,1,1)

axis.hist(dist1)

ax.hist(dist1)
plt.grid()
plt.show()

>Solution :

import matplotlib.pyplot as plt
import numpy as np

rng = np.random.default_rng(19680801)
N_points = 100000
dist1 = rng.standard_normal(N_points)

fig = plt.figure()
axis = fig.add_subplot(1,1,1)
axis.grid()
fig1 = plt.figure()
ax = fig1.add_subplot(1,1,1)
ax.grid()

axis.hist(dist1)

ax.hist(dist1)
# plt.grid()
plt.show()