Image of China presales in thousands of yuan. The flatter bit was when most of China was asleep.
Also on box office theory an insider who has access to raw numbers from a major theatre chain in the US said presales have reached $29.3m already for Endgame. The all time record pre sales for this chain (which has about a third of domestic market) is TFA with $36m. That's gonna be destroyed.
Box office experts are starting to talk of a billion dollar global debut being a realistic possibility. Would be almost double any other film except IW.