So some things I've been wondering about. It's the same thing actually, just 3 scenarios.
It's about the drink that Hermes poured to Qin Shi.
> First scenario
It's just simple honey mead, like Hermes says
> Second, it's poison, duh. And Hermes here is smiling because such a simple trick worked and Ares is actually reacting to Hermes and not Qin Shi
However, Qin Shi, probably developed immunity against it so it won't bother him.
> Third, Hermes gave Qin some buff.
We know Hermes wants to mess around with the Gods and stir up stuff, and betray them, like he did previously with Adamas and Poseidon
As well as that interesting anime original scene of him and Bu chan meeting up
Could point to the fact that he's working with the humans, and leaking info, like who the Gods will send next that Bu chan seems to receive, and could have maybe buffed Qin Shi.