from matplotlib.font_manager import FontProperties

import matplotlib.pyplot as plt
plt.rcParams['font.sans-serif'] = ['Microsoft JhengHei']
plt.rcParams['axes.unicode_minus'] = False
plt.plot((1,2,3),(4,3,-1))
plt.title("聲量圖")
plt.ylabel("文章數量")
plt.xlabel("品牌名稱")
plt.show()