Disclosed is a packaging box (100) having a central base (10), four side walls (12a, 12b, 12c, and 12d) extending upwardly from the central base (10), four pasting flaps (14a, 14b, 14c, and 14d) configured in-between the four side walls (12a, 12b, 12c, and 12d), a cover flap (16) connected to the side wall (12a), a...