Legend has it that on the anniversary of the death of a loved one, as long as your thoughts are deep enough, you will see them after seeing the bloody begonia flowers. But remember one thing, don't get distracted when they are talking to you, and don't follow them any further, otherwise you will never come back.
Situ Liyue was originally an atheist, but on the seventh day of Tai Nai, she was careless. A sudden idea led her to follow Tai Nai. Ever since, the godless world view was broken, ghosts, gods, demons, these things are no longer unfamiliar to Liyue.