China may have encouraged its citizens to protest against perceived Japanese incursions into Chinese maritme territory. These protests resulted in burnt Japanese car showrooms in China nd other acts of violence. The unintended consequence may be a speeding up of Japanese investment away from China to more peaceful and increasingly less costly countries.
From Reuters - http://www.reuters.com/article/2012/10/23/us-japan-china-firms-idUSBRE89M1GS20121023
"Almost a quarter of Japanese manufacturers are rethinking their investment plans in China and some may shift future production elsewhere after the spike in tensions between Asia's two largest economies."
The sentiments were expressed in a Reuters Corporate Survey released on Wednesday and in interviews conducted in recent weeks with executives in industries ranging from electronics to apparel manufacturing.