There are of course several questions to ask first. For instance, type. Do we get Rage Zombies or the Living Dead? The Rage Zombie is fast moving, aggressive, and angry. Whatever causes it generally needs next to no incubation period. The apocalypse arrives quickly. Zombies of the Living Dead variety are by contrast slow moving and for the most part unperturbed. They do get hungry and will gather. But since it takes time for victims to turn and needs quite a large number of zombies before the normal healthy person can be surrounded and brought down, it is something of a mystery how the critical mass needed for an apocalypse gets started.
The second question is origin. Does it start in a laboratory or in a never-before explored cave? That's to say, man-made virus or prehistoric mutation? (Or, for a variation on the natural source, we could even get some modern mutation. After all, zombie viruses that are apocalyptic will tend to select themselves out of existence fairly quickly by exhausting the hosts populations.)
And in the case of China, there'll be the question of where it starts. If it starts overseas, we might fairly well expect some gloating in Global Times and nannying in China Daily. But if it starts at here?
And so on.