diff --git a/src/arcaea_offline/external/wiki_arcaea_cn/__init__.py b/src/arcaea_offline/external/wiki_arcaea_cn/__init__.py
deleted file mode 100644
index d59b800..0000000
--- a/src/arcaea_offline/external/wiki_arcaea_cn/__init__.py
+++ /dev/null
@@ -1 +0,0 @@
-from .constants import WikiArcaeaCnConstantParser
diff --git a/src/arcaea_offline/external/wiki_arcaea_cn/constants.py b/src/arcaea_offline/external/wiki_arcaea_cn/constants.py
deleted file mode 100644
index b5a302e..0000000
--- a/src/arcaea_offline/external/wiki_arcaea_cn/constants.py
+++ /dev/null
@@ -1,52 +0,0 @@
-from decimal import Decimal
-from typing import Dict, List
-
-from bs4 import BeautifulSoup
-from bs4.element import Tag
-
-
-class WikiArcaeaCnConstantParser:
-    HEADERS = ["曲目", "PST", "PRS", "FTR", "BYD"]
-
-    def __init__(self, filepath):
-        self.filepath = filepath
-
-    def parse(self) -> Dict[str, List[int]]:
-        with open(self.filepath, "r", encoding="utf-8") as html_f:
-            html = BeautifulSoup(html_f.read(), "html.parser")
-
-        result = {}
-
-        for table in html.find_all("table"):
-            # check if the table is constant table
-            if not isinstance(table, Tag):
-                continue
-
-            tbody = table.find("tbody")
-            if not isinstance(tbody, Tag):
-                continue
-
-            first_tr = tbody.find("tr")
-            if not isinstance(first_tr, Tag):
-                continue
-
-            header_match = all(
-                expected_header in th.string
-                for expected_header, th in zip(self.HEADERS, first_tr.find_all("th"))
-            )
-            if not header_match:
-                continue
-
-            rows = list(tbody.find_all("tr"))[1:]
-            for row in rows:
-                title = row.td.a.string
-                constants = []
-                for td in row.find_all("td")[1:5]:
-                    constant_string = td.string.replace("\n", "")
-                    if "-" in constant_string or not constant_string:
-                        constants.append(None)
-                    else:
-                        constants.append(int(Decimal(constant_string) * 10))
-                result[title] = constants
-
-        return result