In another book I am reading this passage is referenced in a book called Against The Grain by Huysmans:
formatting link
I looked at my lists of yellow teas and couldnt come up with anything matching si-a-fayoun, mo-you-tann, khansky. I do have kekecha yellow tea which might pair with khansky. BaiMuDan white tea might pair with mo-you-tann. I cant think of anything with si-a-fayoun. I just thought it interesting with such a early reference to yellow teas perse. I have some see through bone china cups. I would have trouble replacing them.
Jim