I think China is one of the most difficult countries to work with because it exists as such an anomaly. It is a Communist country that lacks many civil rights and fair economic standards, and yet is one of the most financially powerful and influential countries in the world. I feel that Obama's respectful demeanor was the best choice to make because it will allow the US to be viewed as cooperative and non-arrogant. However, unless the US along with other countries can think of some way to pressure China into agreeing to certain policies, it seems unlikely that China will have any major changes of heart in the near future.
President Obama touring the Forbidden City on his recent trip to China's capital.
Links:
http://www.nytimes.com/2009/11/18/world/asia/18prexy.html?ref=politics
http://www.google.com/hostednews/afp/article/ALeqM5gHHrGSBYMtuFEoXFEAR0y07iucGA