Ancestors did enjoy the group but, didn't they found/establish the group before enjoying it? Maybe you would like to change the word reference?
oldest form of sport
Since some of your audien e may not be familiat with the sport, you should explqin tge history and method of gameplay for those concerned. Some Koreans may not be familiar with it either.
For what reason? Explain the importance of this reference.
culture(The Korean Wave/Hallyu)
How does it relate? What is the global importance or contribution?
now to change and do our best
What is the global plan? The speech has too many loopholes that need to be addressed.
Limited review due to editing requirements of the text. Contact me privately. Thanks.