[it shouldn't be. that pool was the final resting place of the Wens. he remembers seeing them thrown there; Wei Wuxian doesn't have that memory, but Lan Wangji himself doesn't like the idea of their sad remains dry and twisted on the ground instead of given the dignity of sinking out of sight.

he's not thinking super clearly, so he'll lean forward to touch the edge and try to use Orthodoxy to restore it to something more like a pool than a pile, albeit shooting for "water" this time; Wei Wuxian likes having water in his room]