1. Register your stay within 24 hours — hotel front desk, or the local police station if you rent.入住后24小时内登记住宿:住酒店找前台,租房去派出所(以当地要求为准)。
2. Get a local SIM card / phone number with your passport.用护照办一张本地手机卡。
3. Set up mobile payment: WeChat Pay or Alipay.开通移动支付:微信或支付宝。
Register online — official · 在线自助登记(官方渠道)
You can register your accommodation online yourself — official English portal: s.nia.gov.cn/mps/main-en.html → choose Accommodation Registration. No police-station visit needed.