Does it work with kids or for a honeymoon?
Yes. It is the classic route with only two journeys, both by train. Kids love the Great Wall, cycling Xi'an's city wall and the Maglev. For couples, four days in Shanghai leave time for a good hotel and slow dinners.
Train or plane between cities?
Beijing to Xi'an by bullet train, about 4 h 30 from Beijing West. Xi'an to Shanghai takes about 6 hours by train. If you would rather save time, fly that leg instead.
When is the best time to go?
April to May and September to October suit all three cities. November works too, and some tickets get cheaper in winter. Avoid July and August for the heat, and the first week of October.
Can I add or remove a day?
If you add a day, give it to Xi'an for the Shaanxi History Museum, or to Beijing for the Summer Palace. If you cut one, take it from Shanghai, which works fine with 3 days.
How much does it cost per person?
Trains add up to 1,343 yuan in second class, 587 Beijing to Xi'an and 756 Xi'an to Shanghai. Key tickets in high season are Forbidden City 60, Mutianyu 180, Terracotta Army 120 and Yuyuan 40. Hotels depend on your dates and the level you choose.
Which airport should I fly into and out of?
Book an open-jaw ticket, into Beijing and home from Shanghai. You avoid backtracking and save most of a day. Beijing has two airports, Capital and Daxing, so check which one is on your booking.