Day13 作业输出的汉字都成了方框，请问如何解决

以下是我的代码，感觉应该是编码问题。说实话今天资料里提供的这个库我没太弄懂，代码都是照搬的。

from wxpy import *
bot = Bot()

my_friend = bot.friends()

@bot.register(my_friend,SHARING)
def auto_reply(msg):

text = msg.url
print(text)

import requests
response = requests.get(text) 
# 以上通过requests请求文章链接，获取网页内容


from pyquery import PyQuery
document = PyQuery(response.text)
content = document('#js_content').text() # 将网页内容提取为一个字符串文本作为输入

print(content)


import mymodule.stats_word


try:
    if not isinstance(content,str):
        raise ValueError()
    
except ValueError:
    print('输入的不是文本格式，请重新输入：')   
dic = mymodule.stats_word.stats_text_cn(content) # 调用函数进行分词并统计词频

dic = dict(dic)
import matplotlib.pyplot
import numpy

# Fixing random state for reproducibility
numpy.random.seed(19680801)


matplotlib.pyplot.rcdefaults()
fig, ax = matplotlib.pyplot.subplots()

# Example data
word = []
frequency = []
for i in dic:
    word.append(i)
    frequency.append(dic[i])

y_pos = numpy.arange(len(word))

error = numpy.random.rand(len(word))

ax.barh(y_pos, frequency, xerr=error, align='center',
        color='green', ecolor='black')
ax.set_yticks(y_pos)
ax.set_yticklabels(word)
ax.invert_yaxis()  # labels read top-to-bottom
ax.set_xlabel('词语出现次数')
ax.set_title('你刚才所发文章的词频统计')

matplotlib.pyplot.savefig('words_frequency.png')
msg.reply_image('words_frequency.png')

embed()

Start with the inline script around the matplotlib.pyplot plotting and savefig calls; run it and inspect words_frequency.png, focusing on the Chinese tick labels and titles. Done means the generated image displays those characters instead of square boxes.