||Traveling to the past||

The Juniors were Simply waiting for their Dear Senior Wei when he left them in his invention room since Lan Xichen called him for something important but suddenly an certain Lan stood up since his patience is running out, then he decided to go inside since he was curious on what his Senior was inventing this time of course his friends tried to stop him but you being stubborn then one of them?
Accidentally transferred spiritual energy to one of their seniors talisman, what will happen to the 4
of them?