diff --git a/content/blog/premium.mdx b/content/blog/premium.mdx
index eec0bdb..4361376 100644
--- a/content/blog/premium.mdx
+++ b/content/blog/premium.mdx
@@ -26,7 +26,7 @@ Then you can click the "Upgrade Now" button to upgrade to a premium plan.
 You can use the test card number to pay for monthly or yearly PRO plan or LIFETIME plan.
 
 ```
-4242 4242 4242 4242
+Card number: 4242 4242 4242 4242
 Exp: 12/34
 CVV: 567
 ```
diff --git a/content/blog/premium.zh.mdx b/content/blog/premium.zh.mdx
index eb9df1f..a80ac60 100644
--- a/content/blog/premium.zh.mdx
+++ b/content/blog/premium.zh.mdx
@@ -26,7 +26,7 @@ image: "/images/blog/post-7.png"
 你可以使用测试卡号来支付月度或年度 PRO 计划或终身计划。
 
 ```
-4242 4242 4242 4242
+Card number: 4242 4242 4242 4242
 Exp: 12/34
 CVV: 567
 ```
diff --git a/src/app/[locale]/(marketing)/blog/[...slug]/page.tsx b/src/app/[locale]/(marketing)/blog/[...slug]/page.tsx
index 62fbbf0..f97e99e 100644
--- a/src/app/[locale]/(marketing)/blog/[...slug]/page.tsx
+++ b/src/app/[locale]/(marketing)/blog/[...slug]/page.tsx
@@ -1,7 +1,9 @@
 import AllPostsButton from '@/components/blog/all-posts-button';
 import BlogGrid from '@/components/blog/blog-grid';
+import { PremiumBadge } from '@/components/blog/premium-badge';
 import { PremiumGuard } from '@/components/blog/premium-guard';
 import { getMDXComponents } from '@/components/docs/mdx-components';
+import { NewsletterCard } from '@/components/newsletter/newsletter-card';
 import { websiteConfig } from '@/config/website';
 import { LocaleLink } from '@/i18n/navigation';
 import { formatDate } from '@/lib/formatter';
@@ -15,6 +17,7 @@ import {
   categorySource,
 } from '@/lib/source';
 import { getUrlWithLocale } from '@/lib/urls/urls';
+import { InlineTOC } from 'fumadocs-ui/components/inline-toc';
 import { CalendarIcon, FileTextIcon } from 'lucide-react';
 import type { Metadata } from 'next';
 import type { Locale } from 'next-intl';
@@ -23,8 +26,6 @@ import Image from 'next/image';
 import { notFound } from 'next/navigation';
 
 import '@/styles/mdx.css';
-import { PremiumBadge } from '@/components/blog/premium-badge';
-import { InlineTOC } from 'fumadocs-ui/components/inline-toc';
 
 /**
  * get related posts, random pick from all posts with same locale, different slug,