What's the name of the gap between hotel wallboard and wallboard?

The gap between hotel wallboard and wallboard is called expansion joint. Expansion joint is a deformation joint to avoid cracks in structural members caused by large expansion and contraction when the building is long.

A hotel is a place where guests can stay and eat. Specifically, a hotel is an organization that provides services to its guests through the sale of rooms, restaurants and comprehensive service facilities, taking its buildings as evidence, so as to obtain economic benefits.