Infinity Domain, Nine Ways Mountain Gathering, Mingyue Wuxia

"The Thousand Weapon Heart allows the cultivator to master all weapons in the world, and that's where the Divine Weapon Seal got its name from. Weapon smithing is just one of its functions. Controlling all weapons is its true purpose. 

"Now that I've cultivated this technique to a certain level, I might be able to use it to refine the Dragonslayer," Chu Kuangren thought to himself.

He executed his thought immediately. 

He spent some time trying to refine the Dragonslayer.

The Ultimate Supreme Treasure had restriction seals unique to the Dragon Hunters, and it was difficult to refine. Since it was also an Ultimate Supreme Treasure, people with a weaker cultivation base would suffer repercussions if they tried to forcefully refine it.

Hence, Chu Kuangren tried refining it with the Thousand Weapon Heart.

The Dragonslayer buzzed, and the restriction seals on the blade started to break down.

"It works!" Chu Kuangren widened his eyes.