I can't remember if we find out more about this! Any theories for what it is?

I was wondering about that too, and why it suddenly disappears when ZYL appears.

I do like ZYL saying he'll carry the class leader's sleeping bag. That seems like a responsible, goodness-of-his-heart thing, not entirely for show.

Yeah, agreed.

And when Shen Wei says not to make a big deal of the buried skulls, Zhao Yunlan does what he's told without argument! So that's something?

I like it, yeah!

I do wonder what ZYL makes of SW's (non-)reaction to everything that's going on! We hear absolutely nothing about that.