When does transport Queue appears?

Sarric

Hey there,
I startet to play on S97 and shu recently reached level 4, unlocking their expeditionary army and their transportation queue/resources troups.

While I found the timer for the next expeditionary Troup attack, I have now idea when/why/how these transportation queue troups carry resources appear. Can someone help me?

Thanks a lot,
Sarric, S97, Wei

Sarric

Bump, since the forum gets flooded by a floor company doing ads.