diff --git a/cqwu/methods/webvpn/get_calendar.py b/cqwu/methods/webvpn/get_calendar.py
index 12c9dc0..b5901e3 100644
--- a/cqwu/methods/webvpn/get_calendar.py
+++ b/cqwu/methods/webvpn/get_calendar.py
@@ -58,7 +58,7 @@ def parse_courses(jw_html: str) -> List[AiCourse]:
     soup = BeautifulSoup(jw_html, "lxml")
     trs = [i for i in soup.find_all("tr") if i.find("td", {"class": "td"})][:9]
     for tr in trs:
-        tds = tr.find_all("td")[2:]
+        tds = tr.find_all("td", {"class": "td"})
         for index, td in enumerate(tds):
             divs = td.find_all("div")
             for div in divs:
diff --git a/cqwu/types/calendar.py b/cqwu/types/calendar.py
index d517818..669fa3e 100644
--- a/cqwu/types/calendar.py
+++ b/cqwu/types/calendar.py
@@ -14,7 +14,7 @@ class AiCourse(BaseModel):
 
     @property
     def key(self):
-        return f"{','.join([str(i) for i in self.weeks])}_{self.day}_{self.sections}"
+        return f"{','.join([str(i) for i in self.weeks])}_{self.day}_{self.start_num}"
 
     @property
     def second_key(self):
diff --git a/setup.py b/setup.py
index 8cbeb39..ad84acd 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@ with open("README.md", "r", encoding="utf-8") as fh:
 
 setuptools.setup(
     name="cqwu",  # 用自己的名替换其中的YOUR_USERNAME_
-    version="0.0.6",  # 包版本号，便于维护版本
+    version="0.0.7",  # 包版本号，便于维护版本
     author="omg-xtao",  # 作者，可以写自己的姓名
     author_email="xtao@xtaolink.cn",  # 作者联系方式，可写自己的邮箱地址
     description="A cqwu ehall client.",  # 包的简述