This Court Is Full of Acquaintances

In the ancient continent of Xingye, several countries stood side by side. Seven acquaintances, an escape room. All seven people know each other's names, personalities, and habits. Seven people, seven identity cards. There is only one rule: find out the identities of the other six people and eliminate them from the world. Is that the censor who visited you in the morning? The clerk who was grinding ink for you last night? That proton just sent from a neighboring country? Even the concubine who slept with me last night? Recognize one, lay out one, clear one. Who is the only winner of this game?