Ultimate Note Episode 21

Wu Xie and Wang Pan Zi are trying to find out what really happened during The Mystic Nine's trip to Parcel Island while also curious about his uncle’s past. Weighing heavily on his heart though, is the disappearance of his friend Zhang Qi Ling/"Xiao Ge". Wu Xie finds himself mixed up in the same elaborate conspiracy he has been trying to solve but with what looked like dire consequences. Undaunted, he forged ahead with clues he'd uncovered from place to place, finally reuniting with Xiao Ge, joining another group of explorers led by Wu Xie's old acquaintance Ah Ning along with his friends Wang Pan Zi and Pan Zi. They were also later joined by Xie Yu Chen and Hie Yan Jing, along with Wu Xie's uncle. During this trip, Wu Xie was dealt a devastating blow while Xiao Ge lost his memory again. After briefly returning home, Wu Xie and Wang Pan Zi decided to try and find out more about Xiao Ge's past to help him regain the memories he lost. That trip led them on another adventure and they found themselves backtracking to their previous expedition and the evil force trying to cover up some dark secrets. Thanks to an ancient Lei family blueprint, Wu Xie became acquainted with Madam Huo of the Jiumen Sect. At her insistence, the group embarked on a tomb raid of the real Zhang Manor which the Jiumen Sect had attempted many years ago in a final attempt to search for the truth. At the last possible moment, a puzzle is incorrectly solved leaving the entering group including Xiao Ge to disappear into the unknown, with the mystery unsolved and Wu Xie devastated. All hope is not lost though, as Xie Yu Chen makes a suggestion to Wu Xie that he simply cannot refuse. (Source: MyDramaList) ~~ Adapted from books 5, 6, and 7 of "The Grave Robbers' Chronicles" (盗墓笔记) by Kennedy Xu.