In his first administration he engaged directly with North Korea which has been widely regarded as a Chinese puppet state. The last thing China wants, in my opinion, is a united and free Korea.
Although China's been taking over the SCS, I haven't seen many open hostilities between South Korea and China covered in western news media, almost like SK ignores China's activities for the most part. I don't think there's any chance of a reunified Korea under the Kim dynasty or within 10 years.
Considering a significant bunch of Korean companies have production facilities in China, I'd say the relationship is more amiable than say the Japan-China one. Both were aligned in protesting the release of Fukushima water into the ocean for example.
An economic conflict between China and the United States has been ongoing since January 2018, when U.S. President Donald Trump began setting tariffs and other trade barriers on China with the goal of forcing it to make changes to what the U.S. says are longstanding unfair trade practices and intellectual property theft.
By late 2019, the United States had imposed approximately US$350 billion in tariffs on Chinese imports, while China had imposed approximately US$100 billion on US exports.
Then the Biden admin happened.
The Joe Biden administration kept the tariffs in place and added additional levies on Chinese goods such as electric vehicles and solar panels. In 2024, the Trump presidential campaign proposed a 60 percent tariff on Chinese goods.
It will be interesting to see what happens. 60% all at once would be too disruptive, I think.
Well Biden put Catherine Tai in as the chief trade negotiator, who has been hard on China. Tariffs were expanded. And the de minimis exemption was rescinded in august.