The scene with the king hiding in the pig pen, and the crazy woman badgering him reminds me so much of Romance On the Farm, both in authentics, as well as the flavour of comedy. They are both excellent dramas with excellent cinematography.

Same feel. Same pacing. Different story, but has rather similar aspects to it.

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Almost the same plot, minus the melodrama and the Xanxia. Same female character type.

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Same idea. Both have time travel, and handsome man from ancient China as the ML and FL is from modern China.

Same light-hearted feel. Both are above average quality. Both are feel-good dramas.

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Both based on web comics. Both have a similsr pace/ feel.

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Both are supernatural-themed dramedies. Both have the same dark feel to them.
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Secondary charcters in LLIT are main characters in LSI2. Also, they both have sci-fi elements and a somewhat similar quirkiness about them.

Both are absurdist comedies in historical settings. Both are not very serious, and both have modern humour and are based on Manhwas\ Animes.

Body swapping and palace intrigue are the themes these two titles have in common. Dramedy also. ~~~~~~~~

Has that same ominous and sad feeling to it. Both are about tragic accidents, and both feature people who died and came back to life.

Have a similar overall feel. Same genre, and both have plot twists and involve crime and crime solving.