She didn't see it at all.
This sly dog was always on his best behavior in her presence. When alone, he would call her "wife." When others were around, she was "Fairy Linglong," and to Changxi, she was "Little Yu Linglong." Where was he silly?
However, Li Huanyan was indeed more perceptive than Ji Changsheng.
The secret of the Ultimate Sword Immortal had not been discovered for a hundred years, which was indeed a divine feat. Moreover, as her Illusory Light lineage's Various Illusions approaches phenomenal success, there are even fewer chances of being detected by anyone.
Li Huanyan amazingly was able to see through the illusion and comprehend its essence.
Yu Linglong had to admire, it had not been easy for Yu Bihai over the years.
Ji Changsheng inspected the Jade Sword in his hand very carefully, yet he didn't find anything unusual.