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Claude Code in China: A 5-Minute Setup Guide

Anthropic's official Claude Code endpoint isn't reachable from mainland China. This guide walks the full 5-minute CodeGateway setup — sign-up, key creation, one-line installer, first call — for macOS / Linux / Windows, with measured latency numbers, side-by-side comparison vs VPN tunnels, security notes, and an 8-question FAQ.