The reason Mo Jiuli wanted to visit the Demon Tomb was because before Zi Ye fell asleep, he instructed the little book to remind himself to make a trip to the Demon Tomb. Although Mo Jiuli didn't doubt Mo Baili's words and knew that Di Minghan and the others would be fine, Mo Jiuli had absolute faith in Zi Ye's words; since Zi Ye wanted her to come, she would definitely come...
Therefore, when Mo Jiuli was about to cultivate in Mo Baili's little house, she instructed Xiaoteng to find a way to learn from Mo Baili how to get out and ideally figure out where exactly the Demon Tomb was...
Xiaoteng was very clever; during the year Mo Jiuli cultivated there, Xiaoteng became familiar with Mo Baili. Mo Baili had taken Xiaoteng to the entrance of the Demon Tomb several times. Xiaoteng's reason was simple; it was supposedly to see when Di Minghan and the others would emerge and to welcome them on behalf of his master...
