Earth Prison

In the true inheritance secluded domain of Imperial Court blessed land, Fang Yuan reaches the sealed land spirit Frost Jade Peacock. Mo Yao’s will names rank seven Immortal Gu Earth Prison as the source of the green paste on that statue, and rank seven Immortal Gu Earth Net as the source of the black chains coiling through it. Giant Sun Immortal Venerable had sealed the land spirit deep within so later explorers could not reach it. ^{ch. 602}

Expenditure seal

Earth Prison and Earth Net are one-time expenditure Gu and vanish after one use. Together they sealed the land spirit, and after hundreds of thousands of years the remaining power is still present though much of it has been worn down by time. Both sit one rank above Gruel Mud. ^{ch. 602}

Against Gruel Mud

When Fang Yuan uses rank six Gruel Mud on the statue, Mo Yao names Gruel Mud a direct counter to that remaining seal strength. The green paste on the land spirit’s head melts into green-black mud on the white jade floor, then the melting slows as Earth Prison and Earth Net’s leftover power resists. ^{ch. 602}