When Lu Shu reached the base and saw Luo Nan's photo, he did not go back. Instead, he had called Lu Xiaoyu. After that, he told Zhang Yanfeng that they had to wait three days before his team mates came.
Back then, Lu Xiaoyu did not immediately tell everyone about the news. She had used Johnson's materialization powers to create Lu Shu's clone that would head to Death Valley first. She only told everyone about the news after half a day.
After the clone arrived, Lu Shu switched places with the clone, before Lu Xiaoyu and the rest came to the base. The one who had returned from the snowy mountain was not Lu Shu, but the clone.
Lu Shu himself had been hiding in the snow and quietly waiting.
This was a secret agreement between Lu Shu and Lu Xiaoyu. He felt that there were a lot of problems with Teacher Luo, thus he gave himself another layer of protection.
