The first materials to be delivered were definitely Mysterious Iron, but even so, it took ten days.
The Mysterious Iron Mine at the Zhao Family Fortress is not large, and the ore is deep underground. The quality of the iron ore is pretty good, but it wasn't easy to gather 3,000 jin.
Then, various other materials kept trickling in until the last one was collected, exactly twenty-one days later.
Feng Jun used the late delivery as an excuse to deliver only thirty agricultural vehicles and twenty all-terrain vehicles.
As for the rest, he had also promised a delivery period of twenty days; he would deliver when the time came.
In fact, this inventory had already emptied the storerooms of the Earth Plane, and that was after he had restocked them.
As for the goods he still owed, it wasn't that he was reluctant to supply them, but to gather more on Earth without attracting attention would take some time.