C71 Unable to Open

"System, how do I get in here? "Also, is my mission to explore this place?" After searching for a long time, he still could not find any clues. In the end, Quan had no choice but to choose to request help from the system.

"I don't know. This time, I really don't know how to enter. But I know that you will definitely be able to enter. Moreover, you have to think of a way to enter