In my first comp the fastest Average was 6.9 seconds, the slowest 2:40 Minutes.
With 28 seconds I was on place 90 of 110. Sub 17 would have been needed to get into the first half.
Here in Europe the level of most comps is around this. I don't know about china.
Maybe the larger travel time and the fact that there are speedcubing academies will attract more professional players and less "beginners".
But the worst thing that can happen is that you end up last. It will be a very good experience to be at a comp, even if you are not really good.
At least it is attractive to watch when there are more better players. Maybe you will even witness a world record.
I recommend you to judge a lot, because these are the beste places to watch some good solves