A scheduled RS7+8 resection. A margin ball was drawn 2 cm outside the lesion margin on the 3D reconstruction. We first cut A7+8 and then inflated the lungs. Without waiting for deflation, we dissected the hilar nodes and divided the B7+8 without cutting or ligating it. The intersegmental plane was gradually revealed at the same time. We divided the intersegmental plane and revealed the intersegmental vein, which indicated the accurate intersegmental plane.