Why does the tailor always say that exile city has no raw materials?

No hunting lodge, lack of leather raw materials,

There is no pasture to raise sheep and get wool.

There are three production modes in the tailor factory, 1: leather? 2: wool? 3: wool+leather?

The lack of raw materials may be due to the fact that the warehouse where raw materials are stored is too far away from the tailor factory, which is generally encountered on the map of CUHK.

A warehouse can be set up around the tailor factory, and at least one worker can be reserved as a worker carrying raw materials.