Wrong. Chi-Chi was blown away by a shockwave, not a "little wind" from his fist. Kame-sennin adresses this directly in the manga:
Chapter: 171, P10.4
Context: after Goku blows Chi-Chi out of the ring, seemingly without doing anything
Kame-sennin: “He didn’t just do nothing...Goku probably pumped his fist with stupendous force…The shockwave-like thing created then blew the girl away before she had time to avoid it…”
Not to mention Goku admitted he placed a lot of power on that punch.
Kame-sennin also calls Chi-Chi a master while she was fighting Goku:
Chapter: 171, P4.1
Kame-sennin: “I don’t know quite what’s going on here, but that girl is quite a master…Wh-what’s more, [her style] resembles my own Kame-sen School…”