The restrooms were unenclosed. “I allow three kinds of encircling walls: walls of brick, stone, and wood.” There were no gatehouses. “I allow gatehouses.” The gatehouses didn’t have doors. “I allow doors, door frames, lower hinges, upper hinges, door jambs, bolt sockets, bolts, latches, keyholes, door-pulling holes, and door-pulling ropes.” Grass and dust fell into the gatehouses. “I allow you to firm up the structure and then plaster it inside and outside, including: treating with white color, black color, and red ocher; making garland patterns, creeper patterns, shark-teeth patterns, and the fivefold pattern.”