War is war, but trade and commerce must still go on.
As long as they were not trading strategic materials to the State of Yan, the State of Qin would not do anything to Wei Jiu.
Furthermore, Wei Jiu possessed the world's only naval force, so the State of Qin did not dare to push him too far. Otherwise, if Wei Jiu took his navy and turned to gathering water as bandits, it would be difficult for the State of Qin to encircle and suppress them.
Chapter 924