diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..bee8a64
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+__pycache__
diff --git a/Baidu.py b/Baidu.py
index 89a3863..3f436a5 100644
--- a/Baidu.py
+++ b/Baidu.py
@@ -7,7 +7,8 @@ class Baidu(object):
 
     def __init__(self):
 
-        self.url = 'https://fanyi.baidu.com/v2transapi?from=zh&to=en'
+        #self.url = 'https://fanyi.baidu.com/v2transapi?from=zh&to=en'
+        self.url = 'https://fanyi.baidu.com/v2transapi?from={}&to={}'
         self.header = {
             'content-type': 'application/x-www-form-urlencoded;charset=UTF-8',
             'origin': 'https://fanyi.baidu.com',
@@ -106,8 +107,21 @@ def get_gtk(self):
         #print('gtk '+gtk)
         return gtk
 
+    def langdetect(self, text):
+        s = requests.session()
+        data = { 'query': text }
+        response = requests.post('https://fanyi.baidu.com/langdetect', headers=self.header, data=data)
+        res = response.json()
+        if res['error'] == 0:
+            return res['lan']
+        else:
+            return 'en'
+
     def get_data(self, from_lan , to_lan, text):
         data = {}
+        if from_lan == 'auto':
+            from_lan = self.langdetect(text)
+            print("detected from_lan={}".format(from_lan))
         data['from'] = from_lan
         data['to'] = to_lan
         data['query'] = text
@@ -120,7 +134,7 @@ def get_data(self, from_lan , to_lan, text):
     def translate(self, from_lan, to_lan, text):
         self.data = self.get_data(from_lan, to_lan, text)
         s = requests.session()
-        response = requests.post(self.url, headers=self.header, data=self.data )
+        response = requests.post(self.url.format(from_lan, to_lan), headers=self.header, data=self.data )
         return response.json()['trans_result']['data'][0]['dst']
 
 
diff --git a/Bing.py b/Bing.py
index d939a6f..0d31518 100644
--- a/Bing.py
+++ b/Bing.py
@@ -7,7 +7,8 @@ def __init__(self):
 
     def translate(self, from_lan, to_lan,content,):
         data = {}
-        data['from'] = '"' + from_lan + '"'
+        if from_lan != 'auto':
+            data['from'] = '"' + from_lan + '"'
         data['to'] = '"' + to_lan + '"'
         data['texts'] = '["'
         data['texts'] += content
@@ -20,6 +21,9 @@ def translate(self, from_lan, to_lan,content,):
         strUrl = self.url + data.decode() + "&appId=%223DAEE5B978BA031557E739EE1E2A68CB1FAD5909%22"
         response = urllib.request.urlopen(strUrl)
         str_data = response.read().decode('utf-8')
+        tmp, from_lang = str_data.split('"From":')
+        from_lang = from_lang[1:from_lang.find('"', 1)]
+        print("detected from_lang={}".format(from_lang))
         tmp, str_data = str_data.split('"TranslatedText":')
         translate_data = str_data[1:str_data.find('"', 1)]
         return translate_data
diff --git a/Tencent.py b/Tencent.py
index 579ad67..d17fe12 100644
--- a/Tencent.py
+++ b/Tencent.py
@@ -16,18 +16,18 @@ def get_filter(text):
     return text
 
 def get_qtv_qtk():
-    api_url = 'https://fanyi.qq.com/'
+    api_url = 'https://fanyi.qq.com/api/reauth12f'
 
     headers = {
         'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, '
                       'like Gecko) Chrome/73.0.3683.86 Safari/537.36', }
 
-    res = requests.get(api_url, headers=headers)
+    res = requests.post(api_url, headers=headers)
     data = res.text
     fy_guid = res.cookies.get('fy_guid')
-    reg = re.compile(r'var qtv = "(.*?)"')
+    reg = re.compile(r'"qtv":"(.*?)"')
     qtv = reg.search(data).group(1)
-    reg = re.compile(r'var qtk = "(.*?)"')
+    reg = re.compile(r'"qtk":"(.*?)"')
     qtk = reg.search(data).group(1)
 
     return fy_guid, qtv, qtk
diff --git a/Youdao.py b/Youdao.py
index 5c0a4c4..ad2b0a7 100644
--- a/Youdao.py
+++ b/Youdao.py
@@ -32,7 +32,7 @@ def translate(self,from_lan,to_lan,text):
         self.headers['Content-Length'] = str(233 + len(text))
         ts = str(int(time.time() * 1000))
         salf = ts + str(random.randint(0, 9))
-        n = 'fanyideskweb' + text + salf + "n%A-rKaT5fb[Gy?;N5@Tj"
+        n = 'fanyideskweb' + text + salf + "Tbh5E8=q6U3EXe+&L[4c@"
         self.m = hashlib.md5()
         self.m.update(n.encode('utf-8'))
         sign = self.m.hexdigest()
@@ -53,6 +53,7 @@ def translate(self,from_lan,to_lan,text):
         }
         try:
             result = self.s.post(self.url, headers=self.headers, data=data, timeout=5).json()
+            print(result)
             if result != None:
                 ans = result['translateResult'][0][0]['tgt']
                 return ans