添加8.9页面

src/App.tsx

@@ -10,6 +10,8 @@ import U4 from "./pages/U4/u4";
 
 import UI6 from "./pages/UI6/UI6";
 import UI7 from "./pages/UI7/UI7";
+import UI8 from "./pages/UI8/UI8";
+import UI9 from "./pages/UI9/UI9";
 
 function App() {
   const [time, setTime] = useState<string>(() => formatDate(new Date()));
@@ -54,6 +56,8 @@ function App() {
           <Route path="/u4" element={<U4 />} />
           <Route path="/UI6" element={<UI6 />} />
           <Route path="/UI7" element={<UI7 />} />
+          <Route path="/UI8" element={<UI8 />} />
+          <Route path="/UI9" element={<UI9 />} />
         </Routes>
       </div>
     </div>