I Have Been Practicing Since My Mother's Womb. If I Am Not Invincible, Who Else Is Invincible?

Fang Yong was tricked by an old man into practicing the Chaos Green Lotus Technique. However, he was struck to death by lightning during the tribulation and was reborn in a fantasy world. He started practicing in his mother's womb for three years and built an innate spirit body. Who else is invincible if he is not invincible!