I don't typically write reviews, but I want to write this so that I can remember how much I truly enjoyed this show. I completely fell in love with the characters and the story. Each character has so many dimensions and these small details are given to each character.

Li Xun- In the beginning of the show, he always turns his head towards the sun. He closes his eyes and just feels the sunlight. Later on, we find out that when his mother was in the hospital for cancer, she loved to stand by the window. She loved to feel the sun on her face and because of that Li Xun's goal was to let his mother just at least one more day so that she could feel the sun on her face even one more time. After she passed, Lin Xun feels the sun in place of his mother. Instead of his character simply going through a huge incident and moving on, he continues to feel the weight of her death and simply feels the sun in place of his mother. I also loved the fact that his lighter was not a purposeful gift. His father died when he was still a child and one day he randomly found the lighter. He uses the lighter throughout the entire show, because it's like an extension of him, it never truly leaves him. I love when there will be low audio of the lighter cap coming on and off even when it doesn't show him messing with the lighter.

Zhu Yun- The huge incident of seeing Li Xun almost murder someone and being unable to move or doing anything about it, didn't just go away. The shock of seeing him doing that and them him leaving her, made her begin to have depression. I do wish that would've been explored a bit more, but I love that they didn't have her character go through such a huge event and be totally fine.

Other little character details I enjoyed
Gao-his love of oranges. You can see him eating them all throughout the show, even in the background. At the end, those oranges are a sign of hope for him to live after his surgery. I also loved how it showed step by step how he turned into someone so twisted.
Li Lan-Buying a doll for her barely mentioned child.

How each period of our lives are spent surrounded by others. There will be people that change and people that stay the same. There will people that leave you out of choice and those that stay by you. With each period, you can start friendships and relationships, but not all of them will continue and that's not necessarily bad. You can have close classmates, lose them, then have good coworkers, then eventually lose them. Throughout it all, life changes and people change. You can become warmer or colder and that's up to you.