diff --git a/YaeBlog.Core/Services/RendererService.cs b/YaeBlog.Core/Services/RendererService.cs
index 3195efb..e5b1d96 100644
--- a/YaeBlog.Core/Services/RendererService.cs
+++ b/YaeBlog.Core/Services/RendererService.cs
@@ -216,29 +216,20 @@ public partial class RendererService(
 
     private uint GetWordCount(BlogContent content)
     {
-        uint count = 0;
-
-        foreach (char c in content.FileContent)
-        {
-            if (char.IsControl(c) || char.IsSymbol(c)
-                                  || char.IsSeparator(c))
-            {
-                continue;
-            }
-
-            count++;
-        }
+        int count = (from c in content.FileContent
+            where char.IsLetterOrDigit(c)
+            select c).Count();
 
         logger.LogDebug("Word count of {} is {}", content.FileName,
             count);
-        return count;
+        return (uint)count;
     }
 
     private static string CalculateReadTime(uint wordCount)
     {
-        // 据说语文教学大纲规定，中国高中问阅读现代文的速度是600字每分钟
+        // 据说语文教学大纲规定，中国高中生阅读现代文的速度是600字每分钟
         int second = (int)wordCount / 10;
-        TimeSpan span = new TimeSpan(0, 0, second);
+        TimeSpan span = new(0, 0, second);
 
         return span.ToString("mm'分 'ss'秒'");
     }
diff --git a/YaeBlog/Components/EssayCard.razor b/YaeBlog/Components/EssayCard.razor
index 6c4c34e..02fe971 100644
--- a/YaeBlog/Components/EssayCard.razor
+++ b/YaeBlog/Components/EssayCard.razor
@@ -1,3 +1,4 @@
+@using System.Text.Encodings.Web
 @using YaeBlog.Core.Models
 
 <div class="container p-3">
@@ -13,7 +14,7 @@
         @foreach (string key in Essay.Tags)
         {
             <div class="col-auto">
-                <a href="/blog/tags/?tagName=@key">
+                <a href="/blog/tags/?tagName=@(UrlEncoder.Default.Encode(key))">
                     # @key
                 </a>
             </div>
diff --git a/YaeBlog/Pages/Essays.razor b/YaeBlog/Pages/Essays.razor
index 0a05d69..c61a9ea 100644
--- a/YaeBlog/Pages/Essays.razor
+++ b/YaeBlog/Pages/Essays.razor
@@ -1,4 +1,5 @@
 @page "/blog/essays/{BlogKey}"
+@using System.Text.Encodings.Web
 @using YaeBlog.Core.Abstractions
 @using YaeBlog.Core.Models
 
@@ -25,7 +26,9 @@
         @foreach (string tag in _essay!.Tags)
         {
             <div class="col-auto">
-                <a href="/tags/?tagName=@(tag)"># @(tag)</a>
+                <a href="/blog/tags/?tagName=@(UrlEncoder.Default.Encode(tag))">
+                    # @(tag)
+                </a>
             </div>
         }
     </div>