These disappearance cases all had a common point.
Rainy days, unable to find any remains, the same camping site...
There had already been several such cases at a glance.
Experts believed that there might be natural hollows and dips concealed by dense forests which, unbeknownst to the travelers, could cause them to fall and be shattered to pieces, naturally making it not so simple to search for them.
Beichuan Si did not express any opinion about their views.
He thought about the characteristics he had summarized, and roughly thought about the conditions for "Rain Hall" to appear.
First was the weather.
All these cases occurred on rainy days.
Second was awareness.
When Beichuan Si initially went back to look for Shen Gu Mirai and Beichuan Huili, he didn't notice the path to the western-style mansion.
This was obviously unscientific.
