A small courtyard enclosed by a wall of bluish-gray stone, about three feet long and two feet wide, with most of the area being grayish-black soil. Only a narrow path of blue stone was left in the middle.,In the grayish-black soil, some low-grade spirit plants were planted. Under the silent nourishment of the mist all night, the spirit plants radiated vitality, lazily stretching their tender green leaves.,The bluish-gray stone wall was encircled by a ring of black thorns, densely covered with sharp black spines, serving as a certain degree of protection.。