Li Tianlan boarded a cargo ship that went directly from the Polar Ground to Zhongzhou State.

It was not too difficult to travel from Zhongzhou State to the Polar Ground through Snow Country.

...

Without a passport, he stole into the Polar Ground. The return journey was effortless. Although he had no passport, he had the top badge in Sigh City.

Polar Ground was rich in resources.

Whether it was the South Pole or the North ...