Immortal Cultivator Cultivating From Imagination is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

Qin Feng, who transmigrated into a cultivation world with divine-level comprehension talent, remained unaware of his own strength and believed himself to be weak. After all, in order to keep him, the entire sect pretended to be superior and created an illusion of his incompetence. So, what kind of storm will unfold in this world when a top-tier individual with low self-esteem but exceptional comprehension talent is present!