Why do Koreans make Super China?

When Super China was broadcast, the highest ratings in Korea exceeded 10%.

10% What is the concept? Although South Korea's ratings can't be compared with China's, as long as you know that 5% of Hunan Satellite TV's programs are broadcast by satellite, you can appreciate the shock caused by such a documentary about foreign countries in South Korea.

The question is, why did South Korea make such a movie? Want to make a film praising China?

If Korean TV stations broadcast an advertisement for China, even a short film of 15 minutes can be understood, but this film is really hard to understand. Judging from the professional process of the TV station, we know that this film is serious. National television broadcasts for seven hours (including advertisements). Interrupting the normal broadcast, it is necessary to have such norms in national affairs. Such a budget is the astronomical output of TV stations, and only CCTV can do it in China. Korean TV stations are willing to spend so much money to make such a big production. What does it want to do?