Although Venerable Sword Saint had refined the Ultimate Lightning Tribulation Power, a force that countered all kinds of formation patterns and restrictions, including the Myriad Sword Demon Extermination Grand Formation, his mastery of it was not particularly high. He was even inferior to Feng Lingzi, Young Leader, and the others, let alone Ling Tian. What was more, over the years, Feng Xi and the others had incorporated Lightning Law Power, Dao Dissipation Power, and Chaos Qi into the Myriad Sword Demon Extermination Grand Formation, with assistance from Saint-grade Heavenly Treasures such as the Enlightenment Sacred Tree. Under these circumstances, he simply couldn't threaten the formation.
Since Venerable Sword Saint couldn't threaten the formation, Ling Tian and the others were more than happy to let him keep attacking. After all, they could use the opportunity to gather the Ultimate Lightning Tribulation Power contained in his attacks, which would allow them to obtain a little more of it. Though they had intercepted and neutralized most of it, Ling Tian and the others couldn't completely dispel all the Ultimate Lightning Tribulation Power in Venerable Sword Saint's attacks; some still remained.
Those remnants were just what Ling Tian and the others wanted. Gathering them would allow them to obtain a little more Ultimate Lightning Tribulation Power. They believed it wouldn't be easy to collect this power in the future. What was more, Venerable Sword Saint would expend some of his own power by continuing to attack, leaving him with much less of it later and making him even less of a threat to Ling Tian and the others.
Venerable Sword Saint was no fool, however. He had realized that his attacks still couldn't threaten the Myriad Sword Demon Extermination Grand Formation. If he continued, he would only waste some of his Ultimate Lightning Tribulation