这细细一的一枚钢针在尺许之内急射过来,要以无质的掌风将之震开,所使的掌 力自是大得惊人
The needle had left the mouth, hitting Ah Zhi makes no sense, you need to deflect the needle.
It was stated that he had no time to just rely on dodging and had to use his palm to push the needle away. So his palm was principally aimed at pushing the needle away. Ah Zhi was hit by the accompanying palm wind (collateral damage). The palm was not directed at Ah Zhi, it was directed at the needle.