Recommendations

Main characters met once during childhood/younger age, specifically during some kind of traumatic event.
They meet again many years later~

(Male leads from both dramas have similar personalities too)

I have not watched How Long Will I Love U but It sounds like the Meet Me @ 1006 and How Long Will I Love You have the same concepts of time travel. With merging of apartments, going in and out of certain doors leads to different time periods, etc.

Both dramas follow the main couples love through many lives.
The male lead in both shows are in a position where they hold a lot of power. and the female doesn't remember her past with the male lead.
All in all both dramas are similar in a way, but i wouldn't say they have a similar story line. it's definitely different.

A love story between the boss and the secretary. Unlike the common chaebol parents, the parents in both drama are very nice and love the female lead. Both dramas are very funny. The chemistry is also great.

In both stories, the guy already has a son and struggles when he falls in love with a new woman. However, this is a more serious take on the situation.

both are about whats it like to be a real family. its like the same story but in korean. i think love wont wait is almost a reamake of the korean version

Reply 1997 and A Love So Beautiful are both brilliant dramas and similar in various ways.

Reply 1997 is a Korean drama, whilst A Love So Beautiful is a Chinese web series. Both dramas have similar plots - a boy and a girl who grew up together and one eventually falls in love with the other, along with side couples who you root for secretly. I will try not to spoil the plots of the two shows too much.

Other similarities:

- The romance between characters doesn't start heavily until they grow older, I really enjoyed the slow pace of both these dramas.

- What appears to be unrequited love

- EXCRUCIATINGLY PAINFUL LOVE TRIANGLES

- A problem in the relationship which causes a time gap until the characters meet again

Differences:

- The characters and their personalities are very different in the two dramas

- In Reply 1997, the main two are much more comfortable with each other

- Reply 1997 has more family involvement, whilst ALSB has a bit of family but is majorly focused on the romance of the main characters

- Xiaoxi is open about her feelings whilst Yoon Jae keeps it a secrect

- Reply 1997 is an older drama, whilst ALSB is relatively new.


MY OPINION:
Whilst I loved A Love So Beautiful and am greatful that it is my first Chinese drama, I do have a soft spot for Reply 1997. I also found the characters in Reply 1997 more interesting than in ALSB. At times, Jiang Chen would bother me for his inability to communicate his feelings towards Xiaoxi, as much as I loved him. The plot and character development was also much more interesting for me in Reply 1997, but I do have to say that ALSB's side couple was so beautiful. I adored the chemistry between them, and whilst side couples usually are a nuisance for me, I couldn't help but LOVE those two! :) x

Both have Japanese girl and Korean guy. Same that the other is trying to learn the other's language and they end up falling in love with each other.

Though here, the girl is the one trying to learn Korean.

Both are about a girl that travels to the past and falls in love. In OME, the female lead travels through time and falls in love with an emperor while in TEL the FL wakes up in the body of another girl.

Both are web dramas and are funny and full of eye candy

Both the dramas portray mature relationships of people on their 30s. Apart from the main couple there is considerable story line for the other couples too.

I haven't seen Sm:)e but the description sounds similar to I'm Not a Robot which is about a cynical man who has a condition where he is severely allergic to other people.

Both dramas have mystery and great chemistry from the cast. Mystery features strongly in both, although there is a lot more action in Guardian than I Remember You.

* Main leads have a past relationship which one of them has forgotten about.

Shu Zhan is a popular superstar, however, people do not know that he has a syndrome that causes him to fear skin contact with people. Everything changes when he meets Xiao Xing.

Both stories start with an uneasy girl in high school who meets a new friend that change little by little her life. As the story develops, it gets more creepy, until the final-climax that is disturbing.

The story is not that similar. But both show a famale character in high school, that is envied by her classmates because of her pretty face. They seem innocent, but as the story develops the darker side of both are shown.