The user's blog frontend is hosted on Vercel, and the backend is deployed on a home broadband with a public IP from China Unicom, offering smooth access. However, due to Vercel's hosting, there are frequent access issues in mainland China. The user has to use technological means to browse the site. To address this, the user decided to add a CDN to the website. Among various providers, the user chose the free CDN from Upyun, which offers 15GB of monthly traffic, sufficient for the low-traffic blog. After configuring, the user tested the latency and was satisfied with the result.