Yu Bing, who has a wealthy family, bought an ancient painting from the Tang Dynasty at an auction and accidentally discovered that the painting was a tool for traveling through time and space. Yu Bing took this opportunity to travel through time and space, and came to the mysterious small country called Wan State as Princess Yuqian Li Zhuqing, and began to implement a plan to change history. The infighting between the cunning Prince Yin and the kind-hearted Crown Prince in the palace made Yu Bing's original coldness even more severe. It was only because of her vague relationship with the Crown Prince's bodyguard Xiao Yifan that her heart was not indifferent. She did everything perfectly, and everyone originally thought that the prince would be able to ascend the throne smoothly. Unexpectedly, when everything was ready and only the east wind was needed, the originally humble King Chang launched a mutiny, killed the prince, imprisoned Yu Bing, and ascended the throne. Yu Bing confessed her life experience when she visited Xiao Yifan who had surrendered. Xiao Yifan helped her get the tool to travel through time and space. Yu Bing once again returned to her own calm time and space. A few days later, a letter inexplicably appeared on the table in Yu Bing's bedroom. The signature on it turned out to be "Xiao Yifan"...
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