Greatest Sword Immortal 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

Fang Haotian is a young boy who is deeply in love with a girl called Ningyu, but her parents are opposed to their relationship. Ningyu is arranged for marriage to another man. Can he become strong enough to take back his beloved Ningyu from this man?