After there is a market in this game, businessmen can exchange much-needed resources in the market, or they can exchange resources with NPC at a ratio of 1: 1.
Businessmen and NPC available merchants 0/1
Businessmen providing resources: 1/1
Businessmen on the road: 0/1
immediately trade resources with NPC (1:1).
However, the airport city just lacks this game setting, which leads many players who love this game to give up this game at last,
because some people are unwilling to communicate with many people, which is a personality reason.