Im no expert but I think buying BTC at this price is still a good one, on the future we can expect that BTC price will go to 6 digits already and that we wont be able to afford it that much already, BTC is having its new ATH at the moment so just wait for its correction before buying.. This price is good for swing trades only as you know BTC price flactuates this days too fast.
Look at this price of BTC tho, really do fluctuates really fast so its good for swing trades and not hodling as history may repeat itself again where BTC price pops and hodlers who bought at its ATH before suffer from lose. But I actually dont think that you will be much affected if you are a hodler of it as you can have patience for years until it had its new ATH again.
At this time, a lot of has been realizing that BTC is for longer-term holding. BTC will probably touch $28k then after that, we'll see altseason fully but BTC moves against the logic sometimes so we can't really predict things right. Hold tight still though, a dump is more likely to happen to give way for alts to pump... Looking at that chart you provided from kucoin, traders should think twice - the battlefield looks way more dangerous now.
This level ($31k) is likely to break in the next few min/hours. Next level to watch is around $28.8k. If by any chance this also breaks, be prepared to buy the ultimate dip at $26.6k.
ETH can also be seen to be following the BTC trend though if you look at this:
https://trade.kucoin.com/ETH-BTC gotta watch out for this alt.