Foreign Ministry Spokesperson Hua Chunying's Regular Press Conference on May 23, 2016:
Q: President Obama is visiting Vietnam and the US has decided to lift the arms embargo on Vietnam, indicating closer relationship between the two countries. What's China's take on this?
A: As a neighbor to Vietnam, China is happy to see Vietnam develop normal relations with all countries including the US. And we hope this would be conducive to regional peace, stability and development.
Q: You mentioned that China and Vietnam are close neighbors. Why has Vietnam asked consistently over the last couple of years for the arms embargo with the US to be lifted? What effect will that have on the relationship between Vietnam and the US?
A: I can understand why you raised this question. You may have to ask Vietnam why they consistently asked the US for the lifting of arms embargo, not me. As I just said, we welcome the development of normal relationship between the US and Vietnam, hoping it will be conducive to regional peace and stability.
(Probably Vietnam is wildly optimistic about the country's economy and needs US luxury weapons while US needs to rebalance Vietnam's trade surplus.)