Qin Fei's promotion was entirely based on the Cosmic Blade. Simply put, Qin Fei suddenly refined the Cosmic Blade, achieving Unity of Body and Sword, and thus stepped into the super tier.
This is also the most normal path to super-tier Gold.
Gao Xuan is currently at Level 17, yet he can overpower all strong Human Race individuals. He also relies on the power of many Divine Artifacts.
During Qin Fei's promotion process, Gao Xuan observed the core laws of the Cosmic Blade in depth.
For Gao Xuan, this was also a valuable learning opportunity.
Normally, even if he had obtained the Cosmic Blade, it would be difficult to unlock its core laws in a short period.
Upon seeing the Cosmic Blade's sharp laws, Gao Xuan, though not thoroughly learned, gained quite a bit.
