There are so many experts familiar with jungle environments in the world, yet the organization Meng Qingyu belongs to specifically sought out Professor Liu, not because of his superior professional skills.
But a few years ago, he had a friend who participated in a secret mission on this very island.
It's said that over thirty people took part in the mission, but only one person survived and was rescued by a cargo ship drifting at sea.
When the person was rescued, their mental state had already deteriorated, unable to answer questions normally.
However, he had identification in his inner pocket, and the staff on the ship contacted his family through his personal information.
Later, the person was not picked up by family members but by someone claiming to be his colleague, who took him from the police station, after which the person disappeared.
