This is not diving, it's being pulled by the cable, he means it's about to rise.

Binance founder Changpeng Zhao posted a chart showing a market plunge and advised against constantly watching the market. I think he's saying that the market might plummet, but if you don't watch closely, it's as if the market hasn't plummeted, and it will eventually recover. A surge is followed by a plunge, and a plunge is followed by a surge. Bull and bear cycles are normal and shouldn't be taken too seriously.