Su Yu remembered that when Lei Leian was in the Black Iron World, she had told him that she possessed a "Silver Train Ticket" that would take her directly to this world. At that time, Su Yu was troubled by being pursued and hunted by Yana and did not want to involve Lei Leian, so he simply told her that he would come to find her in due time.
Now, so many days had passed, and he had continuously been without any news of Lei Leian. Although Lei Leian's parents were no ordinary people and she should be safe, and unlikely to be as unlucky as him, having encountered trouble upon arrival in the Upper Realm and been detained, he was still somewhat worried.
As Ada listened to Su Yu inquire so, she hummed softly, then closed her eyes and began to sense continuously.
Ada also had a vivid impression of Lei Leian and remembered her aura. As long as Lei Leian was still in this world, given Ada's current ability and enough time, she should be able to sense her presence.
