CompletedLan Tongtong is a university student freshly assigned to the construction unit, Lantian Group. Mo Zhichi is the chief supervision engineer. After the successful completion of the first trial production at the beam yard, the construction company, supervision company, and quality supervision station are all on site, celebrating the successful pouring of the first beam.
When the owner asks university student Lan Tongtong about the standard values for rebar spacing and concrete cover thickness, Lan Tongtong suddenly draws a blank. Chief supervision engineer Mo Zhichi steps in to help her out.
These two people, adrift in a new place, find their lives intertwined, writing a story together above the river crossing.