Either you are naive, or you are trying to sound naive. China buy raw materials from us at a low price, and cut a huge amount of money on transportation because we are neighbor. Then they export processed materials back to us, not on international price and mess up our economy badly (try google about Chinese steel on VN). Oh and about infrastructure, let me tell you a story: last time when we let Chinese help building roads in northen provinces, in the 1979 war they had almost all the exact cordinates for artillery strike on our troops positions. Now with precision missiles, what they can do to our cities? Another bonus story: China helped us build police HQ, but the police never holds any important meetings there because they fear China might eardroping. Most tech China tranfers to us are either out-dated or have problems (polluting, unsafe, wasteful, etc), and we are tech-dependent on China because China and the West tech hardly share the same standard. Not to mention out of 3 countries that we have border with, most drugs are from China. So no, we are not happy with China expansion.