The film takes a transnational marriage family in Najiaotun, Nalong Village, Baisheng Township, Napo County, on the China-Vietnam border as an example, explaining that the border is a geographical boundary rather than an emotional boundary. In the turmoil of the country, emotion is the best weapon to isolate the turmoil. Faced with the current situation of the COVID-19 pandemic, although Vietnamese woman Lu Tingmin cannot return to Vietnam, she laughs at life with her Chinese husband and daughter, faces various unfair policies, insists on walking together, bids farewell to the winter of 2020, and welcomes the spring of 2021. This is not only a small family saying goodbye to the old and welcoming the new, but also a big country saying goodbye to the old and welcoming the new. In the rolling tide, the country takes the family to move forward together, and the country continues to influence the family as it moves forward.
