This is the Tianhe Realm, where Divinity Transformation powerhouses reside.
Before reaching the pinnacle of power, it's wise not to be too ostentatious.
In the Sea of Knowledge at the Purple Mansion, the Morning Bell tolled repeatedly. After calming his state of mind using this Lifespan Artifact, Chen Mobai turned to look at the Altar of State in the Secret Realm.
Although his Thousand Swords Dharma Body was a creative idea, his own realm was only at the Nascent Soul stage. Even with the knowledge from the Guidance Book and the Immortal Sect, achieving perfection was impossible.
Therefore, whether it be the Human Puppet, Sword Destruction Collection, Immortal Sect Sword Art, or the Primordial Dao Fruit, they were merely reserved for future integration with his External Incarnation. Whether he could truly comprehend them and achieve the envisioned Thousand Swords Dharma Body required ongoing experimentation.