An Jing spoke these words without a hint of hesitation, which highlighted the terrifying aspect of a martial artist who could go to another world and change identities at will, without any family or loved ones as a weakness.
If he was willing to follow the rules, all was well, but if not, nothing could restrain him except someone with greater martial force.
But the same saying applied, if you're going to act something out, do the whole act.
An Jing still was, in some sense, a person of goodness and did not want the situation to escalate to that point.
After all, having a legitimate identity would allow him to purchase various materials and spiritual objects through official channels.
It made it easier for him to deceive those from Great River and the Demon Sect, allowing him to search openly for his mother in Hanhai.