Writing this review on my second rewatch. I'm already on Part 2, but wanted to drop the review before completing that one since I still have things fresh in my mind.

I found this show as a recommendation of the drama "The Starry Love". When I played the first episode, I kept wondering if one of them was a remake.
The visuals in "The Starry Love" are much better than first few episodes of "Immortal Samsara: Part 1". However, the visuals got better from then on. The effects were more believable.
While effects might have been an issue in the first few episodes, the outfits were always astonishingly good. I coveted many of Yin Yuan/Tan Zhou's outfits.
So, thinking that they were a remake I was committed to watching the entire thing. (I don't mind watching stories with the same trope if I loved one of them)
So, the scene started in the heavenly realm, the dances, sisters born out of twin flowers, immortals forbidden to love, the disturbances from the demon realm, and so on. There were so many similarities. But it didn't take me long to realize that while they shared a resemblance to each other both "The Starry Love" and "Immortal Samsara" tell different stories.

Characters:
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Zhi Xi: The elder sister, twin to Yan Dan, was one of the first characters that made me realize that the differences in the stories. The Starry Love's Ye Tan got a sister who was the sole person who cherished her, however Samsara's Zhi Xi was always envious of her little sister. If you are an average person who has to work hard at everything, then It is easier to relate to Zhi Xi's character more than Yan Dan's, who on the other hand, has always been cheerful and carefree. Someone for whom things always come easily. It was sad to see the how Zhi Xi's allowed others perception of her doubt not only herself but Yan Dan as well. She was so easily convinced that Yan Dan was against her that she played a huge role in Yan Dan's misery. Later, the story tried hard to convince the viewers that she did her best to make up to Yan Dan, but her redemption arc just didn't seem sincere. When Yan Dan jumped off the bridge, we could all see the guilt on Zhi Xi's face but there was no real devastation. It could be because of the actress, maybe she wasn't able to convey her feelings through her expressions. Despite that she was an interesting character, a weak willed woman who tried to save her ass and framed her own sister who wanted nothing but the best for her.

Yan Dan | Bai Piao Liang: The younger sister, twin to Zhi Xi. Okay, before watching this drama, I didn't realize that the actress portraying Yan Dan was the same one from "Go Go Squid" and it was a bit surprising to me. I liked Yang Zi looks much in Samsara. Since I had come off binge watching "The Starry Love", I was also pleasantly surprised to hear Yan Dan's voice, it pretty much sounded same as Ye Tan's. There's also something about Yang Zi, she is such a treat to watch. I have seen her performance in "Ashes of Love" as well, she makes the screen light up with her presence. I wish there were more interesting historical romances with her as a lead. Coming back to Yan Dan as a character, she is a carefree light hearted sprite, who wants to take care of her sister and her friends and write for a living, someone who doesn't really have a lofty ambition but someone who's actually warmhearted. It gives me pleasure to watch such characters thrive and makes me doubly sad to see them suffer. She suffered a lot, framed by her sister, abandoned by her love, punished for crimes she didn't commit. The sad part, through her redemption arc, Zhi Xi was never selfless enough to clear Yan Dan's name. Yan Dan was too giving and forgiving of people who did her wrong.

Emperor Yin Yuan/Tang Zhou: Cheng Yi is wow! Him portraying Emperor Yin Yuan is his best performance I have seen to date. The aura he presents, the stylist did such a wonderful job on his entire look, however that all would have been for naught had it not been for Cheng Yi brining his A game to the picture. He did such a great job portraying the "Couldn't care less about anything" look. The indifference was portrayed so brilliantly, it came as a shock to see him further display a wide range of emotions. Yin Yuan as a character was highly complex . As we seem him put things in motions to save Yan Dan, we also see how Yan Dan didn't measure up to the entire world in his eyes. Granted, he did go through heartbreak, refused to forget her as a punishment to himself, but he never had to question Yan Dan's love for him. Yan Dan on the other hand knew that he abandoned her even though he loved her. After all that Yan Dan was put through, it wasn't much to ask for her to find someone else in the mortal world or to feel something for YuMo, but not enough time had passed for her to enjoy her life that Tan Zhou showed up.

YuMo: It was really hard to consider him as a SML in the beginning, he just seemed like silly comic relief and his story didn't really speak to my heart. I could only see him as a guy Yan Dan could be interested in once he came to the mortal world. He was such a sweet guy that I wanted Yan Dan to give him a chance. Even though he clearly had feelings for Yan Dan and did everything for her, he never tried to sabotage her happiness. This is such a stark contrast to YingDeng's love for Yin Yuan, who thought she was doing her best to protect Yin Yuan but was mostly trying to ensure that he didn't end up with Yan Dan. So, YuMo was a greenest flag in this story.

After watching Immortal Samsara, I have become a huge fan of Yang Zi and Cheng Yi. I wish to see them together in more dramas as main leads. I tried watching "Noble Aspirations" but they don't have enough screentime together to enjoy it fully. They are not even a couple a couple in that.

Advice to anyone who wants to watch it:
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Go ahead! It will make you sob at times but its a beautiful disaster that you won't regret watching.