The God Of War Challenging Heaven

He is always looked down upon by the brothers and sisters of the same sect. After getting a mysterious left hand by accident, he rises above the common herd like a bright star. There are fierce duels and competitions among geniuses. Who can be the match for this matchless young guy? Who does that mysterious left hand with great power belong to on earth? In a world full of chaos, various heroic figures contend for hegemony and the man with a mysterious left hand boasts the power of challenging the Heaven!