Culture wise, yes. But consider most of the chinese minor pick humanist. it's better to have one close with better conversion power.
Isn't Miao Chinese culture though? They take religious (I was surprised to learn this as Ottomans during Sunni one-faith). Given the prevalence of religious-taking hordes and Tibet I'd be more inclined to use Dali for Burma and use one or two of Tibet/Sarig Yogir/Jurchens/Miao for China. Wu and Yan took humanism, Shun did not. Best to check these in advance of course.
Given how laughably terrible subjects can be with coring there's a real possibility no-religious Shun would outperform an arbitrary non-Chinese nation with religious when it comes to converting Chinese land, assuming you can afford tons of cathedrals (probably if you're doing this late).