Verdict
Gold-amber: the city mix is strong, but the plan needs softer mornings, fewer optional add-ons, and clearer comfort rules before booking.

This sample shows how ChinaVoyage reviews a multi-generation route before trains, hotel choices, and scenic add-ons become expensive to reverse.

Gold-amber: the city mix is strong, but the plan needs softer mornings, fewer optional add-ons, and clearer comfort rules before booking.
Beijing, Xi'an, Guilin or Yangshuo, and Shanghai can work in 12 days if the route accepts slower days and does not chase every side trip.
Hold Longji, Suzhou, and Disney until the family confirms walking tolerance, crowd comfort, and whether scenery or child-friendly recovery matters more.
Use Beijing and Xi'an for history, Guilin or Yangshuo for the soft scenic anchor, and Shanghai as a lighter ending rather than another packed base.
Back-to-back early starts in several cities make the whole route fragile for a mixed-age group after long-haul arrival.
The rice terraces can be beautiful, but road time, stairs, weather, and luggage friction may not match grandparent comfort.
Breakfast timing, station transfers, evening walking, and the energy cost of unpacking matter as much as the sightseeing list.
These routes usually fail through queues, meal timing, recovery, and stacked early starts, not because the map is wrong.
A beautiful side trip can still be the wrong move if it costs the group calm breakfasts or one flexible afternoon.
The best route is the one that still feels generous after fatigue, weather, and real bodies enter the plan.
This is a promising 12-day family route because it has one clear soft scenic anchor. The danger is not the destination list itself, but the number of optional add-ons competing with family comfort.
For this group, Longji should not be automatic. It may be worth it for landscape lovers, but the drive time, steps, weather, and hotel logistics need a comfort check first.
Before booking, decide whether the trip should feel rich but calm or maximum famous sights. If calm matters, keep the soft-scenery chapter central and make Shanghai a lighter finish.