Eternal Love of Dream (2020)

Playful FL going through different phrases with the ML
ML is higher status than FL. Both ML experience heartbreaks.

Both plays are performed by Reba!!!
I especially like her drama. She is really the best actor I have ever seen.
She is also very cute! I really want to see her with my own eyes 55555!!

The actress are both a princess and goes into another setting where she becomes a servant to the male lead. The male lead is an immortal and falls in love with the female lead after undergoing tragic experiences.

1) At the beginning of both the dramas, you will see that one artist has a one-sided love for another artist, and s/he loves him/her from a distance.

2) In the middle you will see that in both the dramas, both the actors will fall in love with each other in a dream world.

Both FLs are fox shifters who are discovered in fox form by the ML who keeps them as a pet and later secretly learns their identity. Both dramas are fantasy/historicals.

It's the same show with just a different name. Based on the novel of the same name by Tangqi Gongzi and the sequel to the popular 2017 drama, "Eternal Love", “Three Lives, Three Worlds, The Pillow Book” is a 2020 fantasy romance drama directed by Chu Yui Bun.Two thousand years of enduring love and obsession between the female monarch of Qing Qiu and the ancient god of the Heavenly Kingdom. When Feng Jiu was practicing immortal cultivation alone in the wilderness, she was attacked by a beast and rescued by Dong Hua Di Jun of the Heavenly Kingdom. The encounter becomes deeply ingrained in Feng Jiu's heart and to repay her debts, she decides to follow Dong Hua into battle. She soon realizes that her good feelings towards him have evolved into love, but Dong Hua is a god who has forgotten what love means. In order to protect Feng Jiu, Dong Hua sends her to the human realm which results in the death of a friend. Feng Jiu enters the Winged Tribe Princess Ah Lan Ruo's dream sequence in search of a sacred fruit that can bring the dead back to life but gets trapped to relive Ah Lan Ruo's life for eternity. Dong Hua finds a way to save Feng Jiu and realizes that he already reciprocates her love for him, but another hurdle crosses their path. ~~ Adapted from a novel with the same name by Tang Qi Gong Zi. The story is set in the same universe as “Ten Miles of Peach Blossoms”.

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if you like the whole series in general then why not watch the after story.
both have CGI.
both are by the same director.