The China-Japan-South Korea Free Trade Agreement was proposed in 2002.
Two-way trade between South Korea and China was totaled at $230 billion in 2013.
[1] These talks mostly occurred in parallel with negotiations on the Regional Comprehensive Economic Partnership (RCEP) a free trade agreement that includes China, Japan, and South Korea along with Australia, New Zealand, and the ten member states of ASEAN.
[5] Talks after 2019 have been mired by weak public interest in Japan and South Korea and increased geopolitical tension between China and the other two potential members.
Additionally the implementation of RCEP has made the creation of a new trade agreement less pressing.