Jiang He might have transmigrated to a world of Qi and martial arts, but the System that he got only provided him with... seeds. 
"Hold on, System. Aren't these just... peas? Not only are they inedible, but I'm supposed to throw them far, far away?" 

Everybody is Kung Fu Fighting, While I Started a Farm

It was fortunate that the combat blade which the Blood Demon Sect's Golden Immortal was wielding was an acquired soul treasure. It was immeasurably durable and was not even damaged by the Golden Immortal's self-destruction.

The blood-hued combat blade was therefore a little consolation for Jiang He, and as he picked it up, he said, "The finishing on this thing is incredible, though I might be able to craft an innate soul treasure sword if I reforged it."

"Right, there were also many weapon fragments left within the explosive radius!"

While the Strengthened Heavenly Thunderbolt Atomic Hand Grenades had wiped out the attacking immortals in both soul and body, some high-grade immortal items were not completely vaporized, with fragments of them left floating through outer space.

"If they could survive the atomic thunderbolt, they must have been premium-grade immortal items back when they were complete… eh, there's even a sword?"

I, Jiang He, Am Not Good With Words