Does it work with kids or for a honeymoon?
Both. There is only one move, by bullet train, and kids love the Great Wall toboggan and the Maglev. For couples, the Bund at night makes a beautiful finale.
Train or plane between Beijing and Shanghai?
Bullet train. It takes about 4 h 30 centre to centre, from Beijing South to Shanghai Hongqiao, with no airport queues. Second class is 661 yuan.
When is the best time to go?
April to May and September to November, when both cities are mild. Avoid the first week of October and of May, which are national holidays, and if you can, July and August for the heat.
Can I add or remove a day?
Add one to Shanghai for the Zhujiajiao water town, or to Beijing for the Summer Palace. Do not stay fewer than 4 days in Beijing, as the Great Wall takes a full day and the Forbidden City is closed on Mondays.
How much does it cost per person?
The train is 661 yuan in second class. Main tickets in high season are Forbidden City 60, Mutianyu with cable car 180, Temple of Heaven 34 and Yuyuan 40. Shanghai Museum East is free. 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.