diff --git a/src/108shu.com/fetch.py b/src/108shu.com/fetch.py
new file mode 100644
index 0000000..a8ade3c
--- /dev/null
+++ b/src/108shu.com/fetch.py
@@ -0,0 +1,53 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+"""
+Download raw html content as `.html` files.
+
+    USAGE: python3 fetch.py [CATALOG] [OUTPUT_DIR]
+"""
+
+import os
+import sys
+import json
+import time
+import requests
+from logger import logger
+
+userAgent = (  # default user agent
+    'Mozilla/5.0 (Windows NT 10.0; Win64; x64) '
+    'AppleWebKit/537.36 (KHTML, like Gecko) '
+    'Chrome/106.0.0.0 Safari/537.36 Edg/106.0.1370.47'
+)
+
+
+def httpRequest(fileUrl: str, fileName: str) -> bool:  # save html content
+    try:
+        logger.debug('Http request `%s` -> `%s`' % (fileUrl, fileName))
+        request = requests.get(fileUrl, timeout = 30,  # timeout -> 30s
+            headers = {
+                'user-agent': userAgent,  # with fake user-agent
+            }
+        )
+        if request.status_code not in range(200, 300):  # http status code 2xx
+            logger.warning('Http request failed -> `%s`' % fileUrl)
+            return False
+        logger.debug('Http request success -> `%s`' % fileUrl)
+        with open(fileName, 'w') as fileObj:  # save html content
+            fileObj.write(request.text)
+        logger.debug('File save success -> `%s`' % fileName)
+    except:
+        return False
+    return True
+
+
+catalog = json.loads(open(sys.argv[1]).read())  # load catalog
+
+for _, chapterId in catalog.items():  # traverse all chapters
+    pageUrl = 'http://www.108shu.com/book/54247/%s.html' % chapterId
+    pageFile = os.path.join(sys.argv[2], '%s.html' % chapterId)
+    if httpRequest(pageUrl, pageFile):  # save html content
+        logger.info('Page request success -> %s' % pageUrl)
+    else:
+        logger.error('Page request failed -> %s' % pageUrl)
+    time.sleep(1)  # avoid being blocked by the server