The Strongest God of War in the City 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

Ning Bei suffered a family rebellion when he was young, and fled to the northern border alone. For thirteen years, he honed himself as the invincible god of war in the northern border, and protected his home country with a northern king sword. One day, Ning Bei returned to dragon city and faced the battle again. Once love and hatred, his road to revenge began.