diff --git a/EJDE_spider/ejde_main.py b/EJDE_spider/ejde_main.py
index a6dcc28..d7d6450 100644
--- a/EJDE_spider/ejde_main.py
+++ b/EJDE_spider/ejde_main.py
@@ -4,9 +4,8 @@ import re
 import ejde_save
 
 from datetime import datetime
-from concurrent.futures import ThreadPoolExecutor, as_completed, wait
-from retrying import retry
 from bs4 import BeautifulSoup
+from concurrent.futures import ThreadPoolExecutor, as_completed
 
 '''
     爬取网站：'ejde.math.txstate.edu'
@@ -24,7 +23,6 @@ def datetime_transform(date):
 
 
 # Article and author detail
-@retry(wait_fixed=5000, stop_max_attempt_number=5)
 def process_article(url):
     response = requests.get(url)
     response.raise_for_status()
@@ -61,13 +59,19 @@ def process_article(url):
 
         # Extract submission date
         match = re.search(r"Submitted ([A-Za-z]+\s+\d{1,2}, \d{4})", html)
-        submitted_date = match.group(1) if match else None
-        submitted_date = datetime_transform(submitted_date)
+        submitted_date = match.group(1)
+        if match:
+            submitted_date = datetime_transform(submitted_date)
+        else:
+            submitted_date = None
 
         # Extract publication date
         match = re.search(r"Published ([A-Za-z]+\s+\d{1,2}, \d{4})", html)
-        publish_date = match.group(1) if match else None
-        publish_date = datetime_transform(publish_date)
+        publish_date = match.group(1)
+        if match:
+            publish_date = datetime_transform(publish_date)
+        else:
+            publish_date = None
 
         # Extract MSC
         msc_match = re.search(r'Math Subject Classifications: (.*?)\n', html)
@@ -182,8 +186,6 @@ for future in as_completed(futures):
     except Exception as e:
         print("An error occurred:", str(e))
 
-wait(futures)
-
 # Save remaining data
 if len(articleData) > 0:
     ejde_save.save_data(articleData, "Article_TS", str(uuid.uuid4()) + ".json")
diff --git a/EJDE_spider/ejde_save.py b/EJDE_spider/ejde_save.py
index d00a89c..0091c1e 100644
--- a/EJDE_spider/ejde_save.py
+++ b/EJDE_spider/ejde_save.py
@@ -93,5 +93,6 @@ def delete():
             file_path = os.path.join(folder_path, file_name)
             if os.path.isfile(file_path):
                 os.remove(file_path)
+        os.rmdir(folder_path)
 
     print('\nAttention: The temporary storage files have been deleted!')