I've noticed that many coins that pump or break out are mining coins, like the recently popular zcash:native

Moreover, $BTC $ETH, the top two big shots in the crypto circle, were also born as mining coins, both starting with PoW mining (ETH later switched to PoS)

There are also many similar mining coins and star coins, such as FIL, XCH, etc., which convert electricity into computing power and produce output through mining with that computing power

Some mining machine sellers often pump up coin prices to achieve the goal of selling off their inventory. I don't know how long this round of ZEC's market momentum can last

(Many small coins claim a very short payback period before the mining machines are sold out, attracting users to buy the machines, but in reality, after users get the machines, the actual payback days keep getting longer)