Douluo Dalu: My martial soul is Technological Creation

A teenager from Earth reincarnates into Douluo Dalu.
After he awakens his martial soul which is technological creation, but soul power is only 5th level.
After all three powerful factions of Douluo Dalu knows about his strange yet beneficial martial soul, they want him under them or dead.
How will he escape their constant pursuit by saving himself and his family from their fangs.
We will see how he creates his Technological Empire and collects all beauties known in his harem.