SK President is not only a traitor but also an idiot. Such appeasement is not only humiliated but an insult and arguing that such appeasement would strengthen trade relationship with Japan is just off the mark. Claiming that bringing Japan and SK together would stabilize relationship with China is a hint that they want to gang up against China.
They been doing that back stabbing and ganging up against China for centuries since Song Gogoryeu wars 1500 years ago.
Brief history of Korea
Goguryeo roughly North Korea now and huge swath in north east China.
Silla, Baekje roughly South Korea now.
6th century: Song China versus Gogoryeu; Song lost;
Tang China versus Gogoryeu; Tang lost;
7th century: Gogoryeu attacked Silla, Baekje attacked Silla, Baekje allied with Wa(japan). Silla request alliance to Tang Taizong rejected. Taizong died. Silla enticed Tang Gaozong with their voluptous, tall and beautiful Silla Queen Jindeok. Tang finally allied with Silla. Goguryeu destroyed, Baekje destroyed. With Silla and Tang dividing the spoils. Silla decleared war on Tang. Poor Gaozong not even able to meet the voluptous queen. Peace Treaty signed, Silla accept vassal status to China.
16th century: Japan attacked Joseon Korea. With the intention to conquer Korea and Ming China. Ming China rushed to defend Korea, Joseon almost defeated, with Ming China was able to hold North Korea until Japan was exhausted and Hideyoshi died. Ming China suffered huge financial burden of this war and no korean voluptous queen to Wanli emperor. Korea is the true loser. Ming china is the second loser.
20th century to ww2: Japan attacked Korea all the way to China. Horrendous losses to both Korea and China.
korean war: NK attack Sk; SK almost defeated, saved by US. NK almost defeated, saved by China.
We can count how many times China sacrificed in saving the Korean people in 1500 years. Yet these modern Koreans are ungrateful to China.
Personally I blamed Gaozong for trusting that voluptous queen. He could have unified the Korean peninsula under China.
So that is Korea, the sore thumb in China 1500 years history. Next time Japan attack China, China should make sure Japan should suffer for 1000 years until they learn their place.