The story starts with an accident where the FL's family and ML fall victim to. Due to the accident Gu Chuan's heart gets completely damaged and he survives replacing with a complete mechanical heart. Due to the side effects Gu Chuan shuts his emotional side and leads a robotic life. Jiang Xiao Ning, queen of bad luck with a lot of positivity meets Gu Chuan at workplace. Slowly passing time romantic conditions develop between them.
The plot had nothing refreshing, a typical rom-com. It was evident who was behind the accident from the beginning. I'm not going to judge on medical facts because it's a drama.
All the actors did a good job. Fair Xing brought most of the fluffiness and cuteness. I liked the chemistry more between the secondary couple Xu Cheng Ran and Zhao Yan. The office workers also did a good job.
The OSTs were so good. They deserve appreciation.
I would have liked if the duration was 24 or 28 episodes because the starting came of strong then weakened in the middle and again the ending was rushed. If you're looking for fluffy rom-com you could check this out.

~the drama had a lot of Meco grapefruit and self heating hotpot c̶a̶m̶e̶o̶s̶ endorsements XD. Well they must have been producers ¯\_(ツ)_/¯