C303 blood debt and blood repayment
In the beginning, Ling Xiao did not intentionally suppress his own strength, which resulted in him using the Nine Solitary Sword's first form to easily repel Feng Buping and Cheng Xie You. It could be said that he did not have any experience.
Now that he had suppressed his own strength, Ling Xiao could naturally use the Nine Solitary Sword Technique at will