Tang Yin Zai Yi Jie 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

His body has different abilities, but he has not found any way to use them in the real world, all he can do is to be a professional killer. But at least after going to a different world, where there is only fighting or death in the battlefield its strength will appear differently. His name is Tang Yin...