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When the emperor's lamp ran out, the court was in turmoil. Some people received private messages and came to the unpopular fourth prince on the border. The various factions in the imperial city were fighting to the death. The prime minister thought he had a chance of victory, but unexpectedly he became the emperor's pawn. However, the fourth prince took his time and secretly started a small love affair, openly and secretly wreaking havoc and alienating his childhood sweetheart...