i dont know how to explain well.Vietnam's development cannot last long without china.
1st.ur economic policy(革新开放) is learned from china's reform and opendoor policy(改革开放
.u wont gain such a quick and healthy improvement on economy without china's theory and example.
2nd.ur export economy badly relys on China.china has been Vietnam's First trading partner for 3 years.ur economy is mixxing up with china's.china gets a cold,u get a sneeze.
3rd.Vietnam need china to investigate.u can also get them from Japan and USA.i wont doubt this.but u should know ur biggest market is china,not the other 2 countries.
Vietnam need china,and china need Vietnam as well.thats why we treat u as a neighbour and not an enemy.
think about what u can get from Japan and US.All u can get from them is to against ur neighbour china.ur relationship will stay on taking advantage of each other.
then abandon the emotional and think about cooperate with china.we dont use Vietnam to agaisnt Japan,USA,Mars or what else.u r not close to those countries or plannets on map.so between China and Vietnam,all we want is to increase the cooperation.and that cooperation is aiming at promote both countries' development of economy.that should be a healthy relationship between countries.