I Get Stronger Just by Lying down while My Apprentice Cultivates 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

When my apprentice cultivates, I become stronger— my apprentice's cultivation is returned ten thousand times over, and from then on, I dominate, invincible in heaven and on earth!