I want to know the differences in memory skills, especially eyewitness
memory and picture memory, between chinese people and western/european
people.
Please provide me with references studies.

Hi... I don't know of any studies showing differences in those types
of memory between chinese people and western europeans.

There *are* studies showing differences between Maoris and West
Europeans in spatial versus verbal memory -- is that interesting to
you?

Also, there are studies showing differences between Chinese/Japanese
and West Europeans children in memory for numbers.

Are either of these interesting to you? I'd be happy to dig up the
citations if they would be.