Increasing history

by Constantin
(Sao Paulo, Brazil)

a set, 2 vases 11 inch tall, their core seems copper or bronze, no markings. One pretty deteriorated. There are 2 matching plates but those are with some other family members.

I inherited from my grandmother several chinese artifacts. The story goes that some 100 years ago or more her parents acquired those objects (apparently gifts) during an official visit of the russian imperial army, in which her father was a lieutenant colonel, to northern china. That story is probably true and I'm sure about the time because these artifacts already existed when she was born. I would like to have some degree of certainty beyond that story, so i could tell people what those artifacts are, time period, region, if they were common back then, anything that could supplement family history.
I appreciate any input and thank you for your patience and time.
Constantin