I think it's possible to reach level 30+. Also if chinese bitcoin holders discover the site, even further levels we can see in a few months.
Why would the Chinese be interested in pyramid schemes? They tend to invest their money wisely.
My friend, you are clearly not that familiar with China... just look at the amount of fraudulent schemes they fell for, for example to get a green card for the US - google China EB-5 visa fraud...
People of any nationality fall for scams, but the Chinese generally tend to be pretty smart-witted with their investments and building businesses etc.