Epiphany.

Yang Dao sat in the study with his eyes closed. Feng Yun sat on a chair beside him, browsing through the books collected in the study. She was very curious about the knowledge of this world. This place had quite a lot of things similar to Liro but they were technologically backward. 

However, elemental science had helped them negate the matter. The mobiles were replaced by long-distance communication charm cards. They had also developed vehicles for traveling. The books in the study had a rich knowledge of the modes of transportation from all over the world.