Recommendations

Both female lead were victim of harsh bully in school. The male lead didn’t help. Grew up success, and now revenge started.

In both dramas female leads are stubborn, hardworking and persistent.
Gender dynamics and chemistry between leads is similar.
The comedic aspect also falls into the same category.

Badass spy teaming up with a police officer. In this case it's between North and South Korea rather than China and South Korea.

Settings, characters and plot all are very different, but the general tone of both shows, combining crazy humor, super fun stunts, and an engaging cast with great chemistry make both similar experiences. The FL is played by the same actress in both shows too. If you are looking for light hearted action thrillers that don't take themselves seriously and have an engaging plot with little to no romance, there's few dramas that are better than these two imo

mature romance
female lead with some health issues
both male leads play hard to get but they actually love the female lead more
first love

Both have same scenarios like school bullying, but someone like dokgo came to eliminate the bullies. The exceptional fighting skills also are notable, like a valiant or heroic characteristic of the lead.

Coming of age stories about navigating friendship and love; characters are musically inclined, play instruments and are in bands. Characters meet at siam station;
Gay romance, lgbt characters

Both stories see adolescents navigating love, friendship and relationships. Dealing with (secret) crushes, being lead on and leading on. One of the main protagonists is a hopelessly in love high school student, whos interested in someone that (supposedly) loves someone else but engages in intimacy with the boy.
Unexpressed feelings, unrequited love, authentic awkwardness, youth

Share the same director, both have a very striking and beautiful visual aesthetic.
Lgbt stories, drama, romance

Coming of age stories about lgbt high school students; navigating romance and relationships.
Same director, visually aesthetic;
Feel authentic, real, delicate

E-Sa is similar to Thong Nuea Kao:
1) Historical drama with moral
2) Same female lead
3) Femal lead involved with several men

E-Sa is similar to Dok Som See Thong:
-Femal lead sleeps with several man
-Self satisfaction request
-"Man eater" woman

E-Sa similar is to Malai Sarm Chai:
1)Bonth are from channel 5
2) Historical drama
3) 1 woman with at least relationship with 3 men
4) Both have Captain Honmanop as Male lead

E-Sa similar to Morrasoom Haeng Cheewit :
-One woman with relationship to at least 3 men
-Several times married
-At least 1 man died

E-Sa similar to Wanthong :
-A woman implicated with love triangle with several men
-Men fight for her
-Ending alone