opened a short order at the 700 position this afternoon, with a target set at 640, and the lowest it ran to was 625.

To be honest, I am still bullish on ZEC in the long term, with a target of at least 1000 USD. This time, the short order is purely based on the technical analysis anticipating a pullback. Futures contracts are all about profiting from these short-term fluctuations. I have kept my spot position unchanged; for coins with fundamental support like this, it is most comfortable to operate separately for swing and long-term trades.
$ZEC The recent trends of these two are also worth paying attention to.