The Devil's Weapon Maker TDWM

The top 5 sects all wanted to own the 3 weapons of God made by Fan Yuwen, known by all as the greatest blacksmith that ever lived.
Normally, everyone would be so respectful towards him when asking for a weapon to be made but ever since he suffered a backlash while creating a new weapon and lost both his arms, all the people cared about was getting their hands on the 3 God weapons by fair means or foul. Knowing that he cannot stay alive for long, he sent his daughter in law away with his 2 week old grandson. Before they left, he left these words, " Our Fan Family teachings cannot be taught to anyone else but Xiao er. I have left for him 3 items that no one else knows about. This 3 items are our family's greatest treasures.The first is my lifetime's greatest achievement. A Bow that is on the same level as the 3 God Weapons. But because i have always kept it a secret, no one else knows about it. The second is a necklace designed and made by our Fan family founder. The necklace has its own world inside of it and many magical and amazin uses. The third item is the manuscript our founder found on how to make devil weapons. Hide these well and pass it to Xiao er when he gets older. Change your names and live a good life. Forget about revenge for me. Most importantly, the Fan family name dies with me so no one will chase after you. Go now."