如何在matplotlib中组合多个密度图？

import numpy as np
import matplotlib.pyplot as plt

data1 = np.random.normal(0, 1, 1000)
data2 = np.random.normal(3, 1.5, 1000)

fig, ax = plt.subplots()

ax.hist(data1, density=True, histtype='step', color='blue', label='Data 1')

ax.hist(data2, density=True, histtype='step', color='red', label='Data 2')

ax.legend()

plt.show()