The Yinyuan Stone is a passage connecting to the Robb Laboratory.
Shen Yue activated the Yinyuan Stone to enter Robb and awakened Xiao Chu. Xiao Chu, having been frozen, temporarily lost his memory, but out of habitual routine, restarted the experiment, sending some people back to the Sand Table Space in hopes of finding a way to counter the super-body mutations.
Following the usual process, Xiao Chu still couldn't find a solution, the Sand Table Space would be destroyed at the designated time, and all the subjects inside would be eradicated, while Xiao Chu would be frozen again, waiting for the next experiment.
Shen Yue's arrival introduced variables to the experiment and also helped Xiao Chu to recollect many past events quickly, but it was still of no help to the entirety of the experiment.
