It's not surprising that the Qian'an Emperor possesses the Star Domain Mark of the Lingji Star Hall's Small World.
Twenty years ago, the closest relationship with the Lingji Star Hall was the Imperial Family of Dachen.
But it has been kept unused, and the reason is hard to say.
It could be that unsealing that small world is extremely difficult, or perhaps unsealing it might be discovered by the Three Great Star Halls.
However, according to the clues recorded in the Qian'an Emperor's personally written "Secret Records", it could also be that the Qian'an Emperor was plotting the secret technique to break through the Ninth Tier of the Lingji Star Hall, desirous of immortality.
It's just that the Qian'an Emperor himself was not capable; he couldn't even break through the Seventh Tier, let alone the Ninth Tier, which is why no action was taken.
Various reasons are possible.
