Tent based on external support structure

A tent adapted and configured to be supported by an external support structure, the tent comprising a plurality of support rods and a tarpaulin, the support rods being radially connected to a top-middle connecting piece in a center of a top of the tent to form a tent ceiling, the support rods being pivotally connected to the top-middle connecting piece such that the support rods pivot generally adjacent to each other when the tent is folded and the support rods extend outward and elastically deflect against the top-middle connecting piece when the tent is expanded, the tent ceiling being supported by at least three support rods, when the tent is expanded, the tarpaulin being supported by the support rods as the support rods elastically deflect against the top-middle connecting piece, the tarpaulin having a breach formed in the center of the tarpaulin at the top of the tent, the top-middle connecting piece being connected with the tarpaulin through a first connecting sheet, the first connecting sheet extending between the top-middle connecting piece and the tarpaulin at the breach at the center of the top surface of the tent to define a folding reserved space, the folding reserved space having a folding reserved height;

• wherein when the tent is expanded and opened for use, the top middle connecting piece extends through the breach and the first connecting sheet extends from the top surface of the tarpaulin to the top middle connecting piece on an exterior of the tent, and when the tent is folded, the top-middle connecting piece retracts through the breach with the first connecting sheet toward an interior of the tent.