South Korea President Moon went back empty-handed from China's visit.

http://www.atimes.com/article/president-moons-china-state-visit-spirals-pr-disaster/

Many unpleasant things happened during SK President Moon's China visit and these were tell-tale signs that the China-SK relationship was still rocky.

Furthermore, there was no joint communique after the closure which meant that the relationship didn't turn better at all and no agreement was reached between China & SK.

China had shown to SK that the THAAD system installation was a major concern to China and that nothing would turn better with the existence of THAAD.