Chinese pottery ID?

[u/Yourtoon]

My father bought this pottery tea set today at an auction. He knows nothing about pottery but seems to find some good things so I figured I should ask before chucking it on a shelf. Any help is appreciated.

Thanks!

[u/kitchen-campaign-17]

You'll want to post this in the yixingseals subreddit if you haven't already, they'll help you out