Please It's Chinese porcelaine??? if yes periode.? Thank's
Please read this: https://www.chinese-antique-porcelain.com/teapot-marks.html
Yixing pottery is different from porcelain, and today it is also made in other places. I believe such wares are also made in Taiwan and Japan.
You need to find someone specialized on Yixing wares, this is quite different from what we do.
Thank you very much Peter,