Place it at the peak of a fighting-game edit, just after a Mario Jump Sound sets up the approach and just before a Classic Punch Sound sells the hit, then finish the sequence with a Vine Boom Sound for the knockout reaction.
关于此声音
This is a short sound effect from Super Smash Flash 2, lasting about two and a half seconds. It feels fast, punchy and competitive, like the instant a fight turns in someone's favour. The clip comes from that fan-made fighting game.