Huang Yuxuan will always remember that when Wang Quansheng confessed to her for the first time and told her that he liked her and wanted her to be his girlfriend, Huang Yuxuan asked him a question, why did he like her? Wang Quansheng at that time, just with a smile that should be so sure, I answered her: "Because from the first time I saw you, I knew that I like you".

Huang Yuxuan remembers that day very clearly. It was the first day of her sophomore year in college in the late summer of 2011. She and he were both nineteen years old that year.Chen Yunru will always remember that when Li Ziwei spoke to her for the first time, she was sitting behind the counter of the record store, looking at the store and preparing for next year's college entrance examination, reading silently to the melody.

The song being played in the store that day was the sixth song "LAST DANCE" from Wu Bai's album - The End of Love - released in 1996.Chen Yunru remembers that day very clearly. It was the summer of 1998, her last high school summer vacation. She and he were 17 years old that year.​

Now in 2019, because she can't get rid of the longing for Wang Quansheng's departure, Huang Yuxuan tried to use an APP software that can find another person in the world to find another man similar to Wang Quansheng. Unexpectedly, in the photo, she sawI met another Chen Yunru who looked very similar to me.

In the past 1998, Chen Yunru woke up from a coma. During the few days she was in coma, she had a long dream. Her name in the dream was Huang Yuxuan.

Huang Yuxuan traveled back to 1998 again and asked Mo Junjie to burn the tape. This move changed the tragedy that might happen in the future.

In the climax of the finale, Huang Yuxuan and Li Ziwei kissed each other goodbye at the beach, telling each other their promises.On the other side, Li Ziwei drove Xiao Huang Yuxuan away on a motorcycle under the sunset, symbolizing a new beginning.

It premiered on China Television from November 17, 2019 to February 16, 2020. The original version is 13 episodes.Mainland China will broadcast it on iQiyi and other online platforms every Sunday at 23:00 starting from December 22, 2020, with some clips deleted and split into 26 episodes.

《Someday or One Day》The mystery of time travel is that the audience cannot clarify a timeline with beginning and end. It can be traced back to whether Huang Yuxuan fell in love with Li Ziwei first, or Li Ziwei fell in love with Huang Yuxuan first. In the end, it was Huang Yuxuan who traveled through time first, or Li Ziwei.Wei Xian traveled through time, they were each other's starting point and end point, and each other's cause and effect.

In the general perception of the audience, time is linear, and the past, present, and future have a clear sequence; but in the concept of Mobius, time is continuous and interpenetrating, and the past and future are intertwined and mutually intertwined.for loop.Möbius is mainly used in the field of architecture. The play applies it to the field of time and time travel, and it is coherent and logically self-consistent. It also wraps up such an innocent and romantic idol drama shell, and its whimsical ideas are reallyShocking