C870 Comparing Swords?

"This time, Master Lau Wuji is using the Thousand Tempering Hundred Refining technique. As the name implies, through thousands of hammering, the hot metal ore will become tougher. . . "

"Now, Great Master Lau Wuji is using the Thousand Gold Wrapping Silk Technique, which was created by a senior of our sect! This is a profound technique. The key is to continuously polish another type of metal