diff --git a/cpp/version.cmake b/cpp/version.cmake
index 175df5a8..f6a31e27 100644
--- a/cpp/version.cmake
+++ b/cpp/version.cmake
@@ -1,7 +1,7 @@
 
 set(VERSION_MAJOR 6)
 set(VERSION_MINOR 17)
-set(VERSION_PATCH 1)
+set(VERSION_PATCH 2)
 set(VERSION_REVISION 0)
 set(LUNA_VERSION "{${VERSION_MAJOR},${VERSION_MINOR},${VERSION_PATCH},${VERSION_REVISION}}")
 add_library(VERSION_DEF ${CMAKE_CURRENT_LIST_DIR}/version_def.cpp)
diff --git a/py/LunaTranslator/cishu/goo.py b/py/LunaTranslator/cishu/goo.py
index 944545cd..58bf59c5 100644
--- a/py/LunaTranslator/cishu/goo.py
+++ b/py/LunaTranslator/cishu/goo.py
@@ -1,35 +1,34 @@
 import requests
 from urllib.parse import quote
 import re
+from myutils.utils import localcachehelper
 from cishu.cishubase import cishubase
 
 
 class goo(cishubase):
 
     def init(self):
-        self.style = None
-        self.klass = None
+        self.cache = localcachehelper("cishucss/goo")
+        self.klass = "lunagoocsswrapper"
 
     def search(self, word):
         url = "https://dictionary.goo.ne.jp/srch/all/{}/m1u/".format(quote(word))
         x = requests.get(url, proxies=self.proxy).text
         xx = re.findall("<section>([\\s\\S]*?)</section>", x)
-
+        if not xx:
+            return
         xx = "".join(xx).replace('href="/', 'href="https://dictionary.goo.ne.jp/')
-        if not self.style:
-            self.style, self.klass = self.parse_stylesheet(
-                (
-                    requests.get(
-                        "https://dictionary.goo.ne.jp/mix/css/app.css",
-                        proxies=self.proxy,
-                    )
-                    .text.replace("width:1004px", "")
-                    .replace("width:1024px", "")
-                    .replace("width:644px", "")
-                )
+        cssurl = "https://dictionary.goo.ne.jp/mix/css/app.css"
+        if not self.cache[cssurl]:
+            origin = requests.get(cssurl, proxies=self.proxy).text
+            origin = (
+                origin.replace("width:1004px", "")
+                .replace("width:1024px", "")
+                .replace("width:644px", "")
             )
+            origin = self.parse_stylesheet(origin, self.klass)
+            self.cache[cssurl] = origin
 
-        if len(xx):
-            return '<style>{}</style><div class="{}"><div id="NR-wrapper"><div id="NR-wrapper-in" class="cx">{}</div></div></div>'.format(
-                self.style, self.klass, xx
-            )
+        return '<style>{}</style><div class="{}"><div id="NR-wrapper"><div id="NR-wrapper-in" class="cx">{}</div></div></div>'.format(
+            self.cache[cssurl], self.klass, xx
+        )
diff --git a/py/LunaTranslator/cishu/japandict.py b/py/LunaTranslator/cishu/japandict.py
index 93283ce5..b6af74fc 100644
--- a/py/LunaTranslator/cishu/japandict.py
+++ b/py/LunaTranslator/cishu/japandict.py
@@ -1,15 +1,15 @@
 import requests
 from urllib.parse import quote
 from cishu.cishubase import cishubase
-from myutils.utils import get_element_by
+from myutils.utils import get_element_by, localcachehelper
 import re
 
 
 class japandict(cishubase):
 
     def init(self):
-        self.style = None
-        self.klass = None
+        self.style = localcachehelper("cishucss/japandict")
+        self.klass = "lunajapandictcsswrapper"
 
     def search(self, word):
         url = "https://www.japandict.com/?s={}&lang=eng&list=1".format(quote(word))
@@ -25,13 +25,12 @@ class japandict(cishubase):
         if not res:
             return
         res = re.sub('href="(.*?)"', 'href="https://www.japandict.com\\1"', res)
-        if not self.style:
-            self.style, self.klass = self.parse_stylesheet(
-                requests.get(
-                    "https://www.japandict.com/static/css/japandict.ac087f3ecbc8.css",
-                    proxies=self.proxy,
-                ).text.replace("padding-top:60px !important", "")
-            )
+        csslink = "https://www.japandict.com/static/css/japandict.ac087f3ecbc8.css"
+        if not self.style[csslink]:
+            css = requests.get(csslink, proxies=self.proxy).text
+            css = css.replace("padding-top:60px !important", "")
+            css = self.parse_stylesheet(css, self.klass)
+            self.style[csslink] = css
         return '<style>{}</style><div class="{}">{}</div>'.format(
-            self.style, self.klass, res
+            self.style[csslink], self.klass, res
         )
diff --git a/py/LunaTranslator/cishu/jisho.py b/py/LunaTranslator/cishu/jisho.py
index ff30fe06..10f46647 100644
--- a/py/LunaTranslator/cishu/jisho.py
+++ b/py/LunaTranslator/cishu/jisho.py
@@ -2,13 +2,14 @@ import requests
 from urllib.parse import quote
 import re, threading
 from cishu.cishubase import cishubase
-from myutils.utils import get_element_by, simplehtmlparser_all
+from myutils.utils import get_element_by, simplehtmlparser_all, localcachehelper
 
 
 class jisho(cishubase):
 
     def init(self):
-        self.style = {}
+        self.style = localcachehelper("cishucss/jisho")
+        self.klass = "lunajishocsswrapper"
 
     def generatehtml_tabswitch(self, allres):
         btns = []
@@ -132,7 +133,9 @@ function onclickbtn_xxxxxx_internal(_id) {
             )
             link = ss.group()[6:-1]
             if not self.style.get(link):
-                self.style[link] = requests.get(link, proxies=self.proxy).text
+                self.style[link] = self.parse_stylesheet(
+                    requests.get(link, proxies=self.proxy).text, self.klass
+                )
             saver["style"] = self.style[link]
             saver["primary"] = get_element_by("id", "result_area", res) + res.replace(
                 get_element_by("id", "main_results", res),
@@ -163,7 +166,6 @@ function onclickbtn_xxxxxx_internal(_id) {
             res.append(("Others", saver["secondary"]))
         if not res:
             return
-        style, klass = self.parse_stylesheet(saver.get("style", ""))
         return '<style>{}</style><div class="{}">{}</div>'.format(
-            style, klass, self.generatehtml_tabswitch(res)
+            saver.get("style", ""), self.klass, self.generatehtml_tabswitch(res)
         )
diff --git a/py/LunaTranslator/cishu/weblio.py b/py/LunaTranslator/cishu/weblio.py
index 21b2b9a5..d08346cc 100644
--- a/py/LunaTranslator/cishu/weblio.py
+++ b/py/LunaTranslator/cishu/weblio.py
@@ -1,14 +1,15 @@
 import requests
 from urllib.parse import quote, unquote
 from cishu.cishubase import cishubase
-from myutils.utils import simplehtmlparser_all, simplehtmlparser
+from myutils.utils import simplehtmlparser_all, simplehtmlparser, localcachehelper
 import re, threading
 
 
 class weblio(cishubase):
 
     def init(self):
-        self.style = {}
+        self.cache = localcachehelper("cishucss/weblio")
+        self.klass = "lunawebliocsswrapper"
 
     def search(self, word):
         url = "https://www.weblio.jp/content/" + quote(word)
@@ -51,7 +52,7 @@ class weblio(cishubase):
             return '''href="javascript:safe_weblio_search_word('{}')"'''.format(word)
 
         join = re.sub('href="https://www.weblio.jp/content/(.*?)"', __, join)
-        join+=r'''
+        join += r"""
 <script>
 function safe_weblio_search_word(word){
     if(window.luna_search_word)
@@ -59,7 +60,7 @@ function safe_weblio_search_word(word){
     else if(window.LUNAJSObject)
         window.LUNAJSObject.luna_search_word(word)
 }</script>
-'''
+"""
         links = []
         style = simplehtmlparser(html, "style", "<style>")[7:-8]
         for link in simplehtmlparser_all(html, "link", '<link rel="stylesheet"'):
@@ -71,15 +72,14 @@ function safe_weblio_search_word(word){
             ts[-1].start()
         for t in ts:
             t.join()
-        style += "".join(self.style.get(link, "") for link in links)
-        style, klass = self.parse_stylesheet(style)
-        return '<style>{}</style><div class="{}">{}</div>'.format(style, klass, join)
+        style += "".join(self.cache.get(link) for link in links)
+        return '<style>{}</style><div class="{}">{}</div>'.format(style, self.klass, join)
 
     def makelink(self, link):
-        if not self.style.get(link):
+        if not self.cache.get(link):
             req = requests.get(
                 link,
                 proxies=self.proxy,
             )
             html = req.text if req.status_code == 200 else ""
-            self.style[link] = html
+            self.cache[link] = self.parse_stylesheet(html, self.klass)
diff --git a/py/LunaTranslator/myutils/utils.py b/py/LunaTranslator/myutils/utils.py
index e3d78c0a..64ba5c84 100644
--- a/py/LunaTranslator/myutils/utils.py
+++ b/py/LunaTranslator/myutils/utils.py
@@ -26,6 +26,35 @@ from html.parser import HTMLParser
 from myutils.audioplayer import bass_code_cast
 
 
+class localcachehelper:
+    def __init__(self, name):
+        self.name = name
+        self.cache = {}
+
+    def __getitem__(self, url: str):
+        _ = self.cache.get(url)
+        if _:
+            return _
+        b64 = hashlib.md5(url.encode("utf8")).hexdigest()
+        fn = gobject.getcachedir(os.path.join(self.name, b64))
+        if not os.path.isfile(fn):
+            return None
+        with open(fn, "r", encoding="utf8") as ff:
+            data = ff.read()
+        self.cache[url] = data
+        return data
+
+    def __setitem__(self, url: str, data):
+        self.cache[url] = data
+        b64 = hashlib.md5(url.encode("utf8")).hexdigest()
+        fn = gobject.getcachedir(os.path.join(self.name, b64))
+        with open(fn, "w", encoding="utf8") as ff:
+            ff.write(data)
+
+    get = __getitem__
+    set = __setitem__
+
+
 def qimage2binary(qimage: QImage, fmt="BMP"):
     byte_array = QByteArray()
     buffer = QBuffer(byte_array)