Influence is likely to be personal, not national.
It's not that every Chinese must be impressed by every Korean design.
The key would be more like one Chinese designer seeing some design by a Korean and then improving upon it.
Korea is more isolated from China than Japan, but of course, there are rather a lot more Koreans than Japanese living in China.
Modern devices are rarely the invention of just one person. Building upon past ideas and collaboration between the designer and the engineers are more common.