Li Fugui, a modern biological dog, traveled back in time and became Li Fugui, an ancient grocery store clerk. Because he had a face similar to his former consort Li Fugui, Li Fugui was recruited by the Princess of Xincheng and became her guest.
Princess Xincheng seems to care about her old friend, and Yue King Li Fugui seems to have lingering feelings for him. Li Fugui deals with it, and even after traveling through time, his fate of being a dog has not changed.
Therefore, Li Fugui's goal is: if the dog is gone, then he will be safe.
Purpose: Love is precious, freedom is more valuable