She thought of how Su Wen had managed to swim through the passage in one breath, and turned back to Su Wen, "Su Wen, I'm afraid we'll have to trouble you again. Please go up and persuade my sister not to take any risks."
"Then have her call the school and notify them that we are third-year History students specializing in Archaeology from the Provincial University. The photos from earlier will serve as proof, and I'm sure the teachers will believe us. Then we can just wait for them to send help."
"Sure," said Su Wen, with no reason to decline. Now that the tomb chamber had been found, he could also use the opportunity to call the police. Once Song Xincai and the others started digging, this would be a clear case, and Song would not be able to escape like he did with the Placenta Hominis last time.
After agreeing on a plan, the two headed towards the pool they had come up from earlier.
