On Christmas Eve, it snowed in Old Quebec.
26-Year-old Su Muan was called by his instructor to pick up his senior brother Tang Qichi. At 33 years old, he is based in Shanghai and is reserved and restrained, while she is casual and lively.
In three days, she took him through the old city, underground wine cellars and the old port on snowy nights, and when the bell rang, she kissed him out of nowhere.
Before leaving, she secretly wrote a postcard:
"I hope you will think of Quebec every time it snows in the future."
Then send to Shanghai.
Half a year later, they met again in Quebec in the fall.
This time, there was no mentor, no three-day deadline, and no one to tell them where to stop.
But after returning to Shanghai, reality began to catch up with them - Tang Qichi had a marriage arranged by his family, and Su Muan was pushed to another life.
They are obviously getting closer, but it is getting harder and harder to get closer.
Until it finally snowed in Shanghai.
That long-overdue postcard finally has an answer.
What she sent to Shanghai was never just a piece of snow.