Just seems to be a popular resistance range for the market, based on previous fud this cycle, not that it can't go lower, Bitcoin miners require at least $17,000 and have been rather solid of late so they're not going to want to be forced sellers below that.

Binance is a massive part of the market, so we don't know how far the ripples will go, but I think 23 is one to look out for, i've already set my limit orders in that range as I DCA