I did try my best. I guess that's all you can do, yeah?

[Talking about himself in the past tense might not be as much of a surprise, since Shiro has already told Xie Lian that he knows he's dead within a few months of going home.]

Only if you want to. And even if it's a bad memory, it's alright. The fact that you want to share at all, that makes it worth sharing.