Go Princess, Go! (2015)

spirit of a male time travels and goes into female who is main female lead & male lead is her husband

These 2 dramas are similar in that it features a modern person who time-travelled to the past. Both have the modern person acting as the wife of a prince and the princes only begin to look at their wives differently after the switch. Only difference is that Go Princess Go features a man in a woman's body and The Eternal Love has 2 souls residing in the female lead's body. Lots of modern references makes the story fun and does not take itself too seriously.

Both dramas feature an aloof prince whose heart is slowly softened by the female lead. Both Sheng Yi Lun (Go Princess Go) and Xing Zhao Lin (The Eternal Love) pull off their roles very well.

Both female lead got injured seriously went back in time in someone else's body n found their true love.

Both FLs are a modern day man who fall into the water and find themselves in a woman's body in historical times.

Both are time travel and princess related only with the twist of sex change but it is a very funny and odd TDrama

One of the main leads in both dramas travel back in time by falling into water, but Go Princess Go puts an extra twist to the concept with it being a guy waking up in a girls body, which kinda adds another dimension to the ensuring love story. However, neither lead seems to be overly concerned to have traveled in time and neither tries to intentionally (yet) change any course of action in history (such as e.g. Faith) while being perceived as a bit weird/too freely spoken by the other characters. Moon Lovers is more visually stunning while Go Princess Go relies on some sassy comedy.

Both dramas incorporate modern elements, Moon Lovers seems to be big on modern themed music while Go Princess Go tries its hand on more visual and modernized outfits & settings.

There is just one similarity: Guy must to find himself in woman body.

Both are Chinese Go Princess Go is a Drama, Yi Xu Yi Nuo is a Movie so it's much condensed. Very similar plot of time travel and body soul swap, but reversed. In Go Princess Go a man from present time travel back in time to end up in a woman body, a princess married with the crown prince…
In Yi Xu Yi Nuo a woman from ancient time (Tang dynasty) travel to our present time in a boy body… She met a man who look exactly like a prince she was in love…(there is some BL).
Both have some funny moment.
Both have quit a sad ending...

Very similar storyline and vibes. In Go Princess Go, the protagonist is a male who wakes up trapped in a woman's body, the princess hated by her husband the Crown Prince, the drastic change in her personality makes her husband fall for her

Crazy Queen looks like Go Princess Go but it is worse. The time-traveller in Crazy Queen is a lady of a male harem. But dialogues are not so amusing and the plot is more stupid and dragged.

Both dramas are directed by the same director, so the kind of comedy is similar.

The design of the costume is very similar too. Overall, Oh my General gives off the same vibe as Go Princess Go!

Mengfei Comes Across and Go Princess Go are both rom-coms set in ancient times. These shows mix modern day issues with the classic tale of court intrigue at the palace. In both shows the heroines are getting along with the concubines, in stead of fighting them until death. On the contrary, they really dislike their husbands, using their wit to avoid them or undermine their actions, but later on love comes by.

This drama is similar because of the Time Travel, romance, comedy, and Historical time period. Both also involve politics.

They have the same comedic style, which is they don't take themselves seriously. They are shows you can easily binge watch.

They have the same kind of feeling when you watch them. They both have this "princess" who just really isn't your typical princess. They both are funny and you just have to watch to understand.