Chinese or japanese

by Cecelia Valverde
(Gilbert,Az. USA)

I bought these plates a my local GW store and they reminded me of a giant flower I don't know if they are Chinese or Japanese they are blue and white and have a mark on the bottom that I couldn't find in the marks that you have available or the other would appreaciate some information if anyone has some.
Thank you
Cecelia Valverde