Lin Huang left Emperor City first thing in the morning and headed towards Division 3.
He visited Sweep City's black market and the Wanbao Auction. He only returned to Emperor City after getting his hands on the materials that he had asked for earlier.
On Dynasty's end, although they were also helping to collect materials, they were using their own sources. Meanwhile, the black market in Sweep City was the Heretics' source. For the Wanbao Auction, it came from the noble families.
Naturally, using three different sources to look for the materials he needed was more efficient than using a single source.
After returning to the Emperor Palace, Lin Huang got Huang Tianfu to bring out the materials they collected. Amassing them together with the materials he had purchased from Division 3, he asked Bloody to help sort them out.