I'm concerned this vote might significantly impact the story, so I'm creating an SV account to share some of my thoughts on the options.
It is unclear how long the war arc will take, but judging by Shu Yue's words, Ling Qi might be completing the name quest not long after it. Meanwhile, we still have a lot of issues with Ling Qi's worldview, insights and the set of arts for which we have a limited timeframe to work on. After the name quest, these will become more challenging, if not impossible, to alter.
In particular, Ling Qi's perception of family and friends seems slightly idealized. We also have multiple insights about community and progress, but currently, no arts can express them. I wonder if the palace lesson could touch on some of these issues, advance Ling Qi's understanding of these topics, and reinforce some of them in her cultivation. I don't think we had many opportunities like that throughout the quest, and I'm not sure we will have many in the future. Could anyone suggest any? I can only think of visiting Ling Qingge's old clan, but Ling Qi seems to have already outgrown that. I also enjoy the possibility of themes of hope and ideals being carried to the war arc, being reinforced or challenged and becoming a source of more insights for Ling Qi. It would be relevant in her work with Renxiang and in clarifying Ling Qi's cultivation objectives.
The main advantage of the "lesson of the roots" option seems to be advanced utility during the war arc. I, however, believe that narratively, that might be a disadvantage. Whatever the new ability Ling Qi would get out of it, it will be a continuation of the Thief of Names, which is currently disjointed from her other arts. So, while unlikely to add utility to her fighting scenes, it might instead add additional scenes of infiltration/spying, which, while exciting on their own, will take narrative space. I am concerned that the arc will assign too much weight to both fighting and spying, having two aspects undercooked by the finale. Some might argue that having less utility would be punished by more significant losses during the war. But given the narrative impact of killing some major characters, would it even be that bad? A weaker strategic position of the Empire could also make it harder to impose conditions and provide an opportunity for DIPLOMACY.
Moreover, becoming a mindwalker could close the doors that Ling Qi needs. During the summit, some higher-level cultivators already noted the similarity between her and Hui's techniques, which we might not want to strengthen. And just in general, it must be hard to establish trust when one party can mindwalk the other. Trying to become a diplomat while everyone is wary of you will be fun.
From the story progression's point of view, I just don't think it is logically consistent for Ling Qi to pursue mindwalking now. Her latest insights were all about mutual respect, sincerity and understanding; her latest conversations with the spirits were all very successful, and the summit was a victory. Why would she think that it is mindwalking that she lacks now? Sure, she found utility in exploring minds during the summit, but there wasn't much closure and reflection after infiltrating Xia Anxi's mind. It might be too early/unfitting for Ling Qi to explore the roots at the moment. On the other hand, choosing "the lesson of the palace", which seems to be a less offensive and more perceptive child of the Thief of Names, aligns closer with the recent "Clarity" (Understanding) insight and seems to be a more natural follow up from the previous choices.
The roots lesson could also undermine some of the war arc story elements. Ling Qi chose diplomacy to prevent conflict, so it is not unreasonable to assume that we will have some "horrors of war" scenes to reinforce this narrative. However, if we chose to explore the full horrors of Hui, making these scenes work later will be tricky. Like it will be hard to have readers be moved by a "loss of the comrades" scene when they just learned about things worse than a mother being forced to kill her little child.
Finally, many people argue that the vote is not that important since we could visit another location later in the story, arguing in favour of choosing the root lesson now. Whether that's true or not, it's surprising that this argument isn't motivating the choice of the palace lesson since it contributes to a broader, more encompassing development of Ling Qi. After the war and the completion of the name quest, her cultivation and worldview might not be as flexible to incorporate new ideas. On the other hand, mindwalking is already partially represented in the Thief of Names and is unlikely to be hard to acquire later if needed. So, if we are to maximize Ling Qi's cultivation, visiting the palace first seems to be a more optimal choice.
[X] The lesson of the palace