In fact...

Fang Qiu could have waited for the rescue team outside to dig them out of the cave. Anyway, the corpse poison and bacteria in this tomb were not harmful to him at all.

However, for the other people, the situation was different.

They had opened the tomb door before going down the tomb. In this way, there was airflow in the tomb passage, but this was the case only in the outer tomb passage.

The inner tomb passage and the ...