One of the effect of the interaction between China and Korea is Cultural Diffusion.
Currently, korean culture is a mixture of Japanese and Chinese cultures from their previous contact hundred years ago. You can see the similarties of culture and tradition between these three countries, whether from their traditional clothes, music instrument, writings, etc
He is better because he is not a Cheeto. He doesn't speak weird.
Why Biden will be a better president because he will treat all religions fair and equally. Also he will find a solution for the sickness (c-19).Also he will make America GREAT AGAIN.