Niang Niang Jin Ri Bu Shang Chao (2023)

Both dramas feature a body swap between the male and female leads.
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Both are mini dramas about a body swap. One is between a mother and daughter while the other is an emperor and a woman.

Both are about a body swap (grandmother and grandson vs. emperor and woman).
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Both dramas feature a body swap between the male and female leads.
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Both dramas feature a body swap between a guy and a girl.
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Both dramas feature a body swap between the male and female leads.
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Both are historical fantasy dramas in which the FL swaps bodies with the emperor ML.
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Both are historical fantasy mini dramas in which the FL swaps bodies with the emperor ML. Both have a very similar tone/feel.