Shi Feiyang borrowed the divine energy of the four women to create Heavenly Secret Demon Illusions with the Heavenly Secret Demon Great Technique, and used them to tempt the demons in the lamps.
Indeed, the demons could not resist the allure of the pure and chaste female immortals of the Mysterious Sect, and countless devilish thoughts gathered here layer upon layer.
The Great Sun Tathagata Golden Lamp Formation was extremely formidable, and it operated with great precision and ingenuity. If Shi Feiyang had actively sent these Heavenly Illusions to them, they would have been incinerated by the Demon Fire Golden Light Line along the way.
Thus, Shi Feiyang turned from being proactive to passive, making the demons long for and desire the illusions themselves. Shi Feiyang then used the Secret Demon Great Technique to establish a magical connection between the two.