Chinese tea set family heirloom

[AlzGood2]

Hello,
This is my first time on an antiques form. I'm interested in knowing more about my great grandmother's (1875-1952) tea set. She lived in Belgium. My grandfather was an import/exporter in Belgium from perhaps 1927-1935.
I have attached a photo a saucer and the mark. The set is very thin and light weight.
Thank you,

[ssbill]

it's japanese. It doesn't look very old