Ling Xiao believed, that Lan Luofeng would definitely tell Ling Lan about how they had met and fallen in love, and about his mecha. (On the second point, he was mistaken. Lan Luofeng hadn't told Ling Lan about his mecha, since Lan Luofeng believed that it was still a bit too early to tell Ling Lan about things to do with mecha.)
Fortunately, Lan Luofeng had once revealed that the place she most wanted to visit was the 'World of Belief', which had been recorded down by Little Four, allowing him to find the correct answer to that earlier question. It had to be said that Ling Lan had passed that test by the skin of her teeth. Still, even if Ling Lan had failed, she could have still gone home to ask Lan Luofeng for the correct answers and attempt the mission again later.
Ling Xiao had not restricted the number of times someone could take the tests, for he himself was afraid that his questions were too left-field that even Lan Luofeng might have forgotten about some of the answers.
