It must be that the wavelength isn't quite right. Even though Li Fan has found the 'gate,' he still cannot enter the Weaving Bureau. It likely requires radiation of a special wavelength to activate the signal. So he does need a key...
Li Fan stared at the erratic moth, and suddenly, a thought flashed through his mind.
Emei is capable of directly performing the Heavenly Silkworm Feather Transformation, which definitely indicates direct contact with Wan Yu immortal insects. And the ascension at the Golden Summit likely involves something similar—the escape into the subspace crevice. Perhaps within Emei's Daoist techniques, there exists a 'key' required to access the immortal insect relics. Or, to put it more specifically, it might be the 'immortal fire' capable of emitting specific wavelengths of radiation... Emei's immortal fire... Wait!
Li Fan's thoughts raced, and suddenly, he remembered.
Emei's exclusive immortal fire—he had actually seen it with his own eyes!
