China is a country on a scale that defies belief — five thousand years of continuous civilisation, from the Great Wall snaking over mountains to the terracotta armies and neon megacities of today. Beijing, the imperial capital, is the grand front door: the vast Forbidden City, the sacred Temple of Heaven, hutong alleys and, an hour away, the most spectacular stretches of the Great Wall. Ancient and hurtling into the future at once, it's overwhelming, fascinating and unlike anywhere else.
What things cost: China is good value — street food, the excellent metro and domestic travel are cheap, though top hotels and the famous sights add up. You'll want a VPN for Western apps, a payment app (Alipay/WeChat) set up in advance, and a translation app, as English is limited. Cash is nearly gone. When a zone below says 'low', that means low for Beijing, which is affordable.