It's a Zen thing. Just an old ceremony involving tea. Thing like this that you'd be expected to do as a hostess of a noble house in the courts.

[She frowned and sighed a little.]

Can't actually do the ceremony quite like this, but tea's an old thing. Just kid of reminds me of other times. Times I wasn't angry. [She sighed a little, almost wistful.] But that was a long time ago.