Dogfight between Red Bull and Ferrari? Chinese GP promises spectacle

Rarely have Formula 1 teams entered a Grand Prix with so many question marks as they will have in Shanghai, China. Only one free practice session is scheduled - which might be completed in rain - before qualifying for the first sprint race of the season. A day later, the Sprint can be seen as a race simulation run in the run-up to the GP, but going for a completely new course in terms of set-up - although permitted - is likely to be impossible. So does a surprise beckon in China?