Only by overcoming this lightning tribulation can his Golden Core be perfected, and only then can Gu Yuan be considered a true Golden Core Great Cultivator!
It seemed that the thunderclouds in the sky sensed Gu Yuan's current status, as the thunder and lightning flashed for a moment before suddenly,
Rumble——!!!
A dazzling deep blue bolt of lightning struck out from the thunderclouds, striking straight towards Gu Yuan.
This bolt of lightning was as thick as a house and over thirty zhang long. As it appeared, the surrounding void was filled with countless tiny streaks of lightning.
The sky was illuminated in a blue-white brilliance within a radius of hundreds of li, dazzling the eye.
A pressure so overwhelming that it made one's chest constrict and breathing difficult poured out and spread, even the cultivators observing from dozens of li away could sense the terrifying power of this lightning.
