They are both fun to watch, Shen Li is focused on one romance, Starry Love has multiple romances but the main focus is Empyrean Xuan Shang and Ye Tan's story. All of them are cuties. Both ML's fall hard once they accept that they can forgo the weird teachings and are allowed to fall in love.

Both dramas have leads the initially test each other's patience but then later go all out for each other. There is no use of the silly misunderstandings as a plot device. In both the ML are played by terrific actors. The FL in Royal Rumours is not as famous as Shen Li's FL but she is a hidden gem.

One is Xianxia, the other focused on revenge but both are solid in terms of leads, they are all beautifully written and enacted. Shen Li & Jiang Li both have a strong will, whereas Xing Zhi and Xiao Heng both treasured their lovers.

Both dramas were gold with leads that care for each other more and were willing to deal with their problems together. Even when they were being crazy, there were no silly misunderstandings but genuine care for each other.

Warning though: One and Only has a brutal ending, watch it at your own peril.

What I think is similar in both is the maturity between the couples. They understood each other so well.

While Shen Li & Xing Zhi bickered a lot, they still respected each other. Zhou Sheng Chen respected and treated Cui Shi Yi with a lot of care. They get their happy ending in the modern times (in the sequel Forever and Ever).

Both the leads are green flags that support and care for each other. While Thousands of Years of love has a pinch of angst, there's no angst in romance in Who Rules the World. Despite being sweet, Who Rules the World has just the right amount of sugar.

They are both short and cute romances where leads have good chemistry. Furthermore, they also have quirky FLs that you'll not find annoying. What's more, the couple are faithful to each other even when it seems like things are gonna go crazy now.

The leads from "Dreaming of Freaking Fairytale" remind me of the leads from "Wedding Impossible" They are both so awkward yet adorable. However, the leads in Cinderella have better chemistry.

Lovely Runner will be my all time favorite because of the cast and the entire happy haze it created for me.

This drama has just begun and it is already making me laugh like crazy. So, these both rom-com share similar vibes.

Apart from that, one is a fairytale-based romance (Dreaming of a Freaking Fairytale) while the other is time travel based (Lovely Runner).

The lead couple from HTCCC gives me the same vibe as that of the lead couple from the MMIC. They are all so pretty, corny, and adorable.

In both dramas, two weddings take place on the same day and the brides are swapped in the carriage. In the starry love, its two sisters, twins. In WCRG, its two women in the same neighborhood who happen to be married on the same day.

The Male Leads in both are major green flags.
The Female leads in both are unfeeling, in Ashes of love it is due to an unfeeling pill, whereas in Love & Redemption , the FL is born deprived of her six senses.
Both female leads failed to put their trust in the male leads, causing them harm. (It was unbearable to watch)
Both Male leads pretend to marry another woman when the Female leads realize their mistake and come around.