The first part of the day-by-day route, free to read.
Days 1 to 3: Beijing
Beijing Daxing (PKX) is the newer of the two international airports, about 46 km south of the centre; the Daxing Airport Express runs to Caoqiao in around 20 minutes for ¥35, connecting onward via metro. Beijing Capital (PEK) sits northeast of the centre and connects via the Airport Express to Dongzhimen. Base yourself in Dongcheng or Wangfujing: everything on this leg of the route, Forbidden City, Tiananmen, Wangfujing itself, is walkable or a short taxi from here. Beijing's metro is cheap, extensive and signed in English; no car needed anywhere in the city.
Day 1: Arrival and reset. After a long-haul flight, resist the urge to sightsee immediately. A Korean-style bathhouse (汗蒸幕) is the correct first move: heated ondol floors, hot and cold pools, sleeping areas and unlimited food, typically ¥100 to ¥150 entry. Rest through the afternoon rather than fighting jet lag. In the evening, walk Wangfujing pedestrian street: department stores, the Wangfujing Snack Street night market for skewers and regional street food, and a gentle first look at the city's scale without demanding much of you.
Day 2: Forbidden City and the panel of the day. Start at Tiananmen Square, then enter the Forbidden City from the north or south gate depending on your hotel's location. ⚠️ Tickets must be booked online in advance on the official Palace Museum site; they sell out weeks ahead in summer and same-day walk-up entry is not reliable. Allow a minimum of three hours; the Hall of Supreme Harmony, the Hall of Preserving Harmony and the Imperial Garden at the north end are the essential stops across the complex's 980 buildings. Lunch near Nanchizi or in the Wangfujing area. If time allows in the afternoon, the Temple of Heaven is a short taxi south; otherwise push it to Day 3.
Day 3: The Great Wall at Badaling. Badaling is the most-visited, most-restored section of the Wall, roughly 75 minutes from central Beijing by car or the S2 suburban train from Beijing North station (cheaper, slower, more atmospheric). ⚠️ Go before 9am; by mid-morning the site is genuinely crowded and the photos suffer for it. Pre-book a timed entry slot online. This is a half-day out-and-back; you'll be back in the city by early afternoon. Round out the day at the Temple of Heaven if not done on Day 2: the Hall of Prayer for Good Harvests, one of the most photographed wooden buildings in China, set in parkland where locals practise tai chi each morning and into the afternoon. Niujie, the historic Muslim district in the city's southwest, is worth the detour for lunch if you haven't eaten well yet. Pack tonight; the HSR to Xi'an leaves in the morning.