if someone introduced her to the custom and pointed out that friends can do it, too, Yanli would give Xichen a valentine. Maybe Sizhui, too, though I think she'd push her son toward that, lol.
shi qingxuan @ fafa : probably something small! little box of chocolates to be polite and friendly!! /o/ shi qingxuan @ he xuan: pre-canon- every! year!! big box of chocolates!! tiered box!! / post-canon: ... :'''')
Or, you know, current canon...sobshi qingxuan @ he xuan: pre-canon- every! year!! big box of chocolates!! tiered box!! / post-canon: ... :'''')
he'll do his best
the chocolate is probably pretty decent