Short answer
Only if you use a local SIM or hotel Wi-Fi and need Google, WhatsApp, or Instagram. An international roaming eSIM usually reaches those services without a VPN. If you plan to rely on a VPN, install and test it before you fly.
When you need one
Local SIM cards and hotel Wi-Fi route through the Chinese internet. Google services, WhatsApp, Instagram, Facebook, and many Western news sites are blocked. If those matter to you, you need either a VPN or a connection that routes outside the mainland.
If you can live on email, maps, and Chinese apps for a few days, you do not need a VPN at all. Decide before you arrive; installing one after you are on a restricted network is much harder.
The eSIM alternative
An international eSIM that roams on China Mobile or China Unicom usually routes data through the provider's home network, outside the mainland firewall. Google, WhatsApp, and Instagram often work without any extra app. It is the simplest option for a short trip.
Install the eSIM before departure and test it at home. Data is more expensive than a local SIM, but it avoids the registration queue and the VPN question. The eSIM briefing compares the options.
VPN practicalities
VPN use in China is legally restricted, and reliability varies by network, region, and time of day. A VPN that works in Guilin may fail in Yangshuo or Longji. Free VPNs are especially unreliable and insecure.
Install and test the app before you travel, because app stores and provider sites may be inaccessible on arrival. Do not rely on a VPN for banking or payments; use the official apps and keep a backup plan. Treat connectivity as convenience, not a guarantee.
What works without either
Apple Maps works but is limited. Amap and Baidu Maps are better for local navigation, though they are in Chinese. WeChat, Alipay, DiDi, and translation apps all work on the local internet. Download offline maps and translation packs before you fly.
The language question covers translation apps, and the payments question explains why data matters for Alipay.
Related questions
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