Ideas:

1. It looks like this figure is showing his penis to the right.

2. And is he possibly in the water? Mercury (or rather Wednesday) in the Chinese calendar for the week is 'the day of water'.

3. Given that there is a story in Tuesday-Wednesday-Thursday, and given that this story is about the stranger arriving over the sea to take possession of the island, Wednesday ought to be the time of chaos. The old rule is overturned and the new rule is not yet in power.