Multicolored guts

Chu Du opens an artificial Earth Trench in Hei Fan grotto-heaven and places a huge red and black meatball into the soil. On contact it spreads flat across several li and takes in earth qi, shifting through blue, green, jade, and fire-red colors. These are multicolored guts, a rank seven immortal material that comes from deep within Earth Trench. He fills the trench with dozens of them until no more can be put in. ^{ch. 1163}

After placement, multicolored guts must absorb enough earth qi and nutrients before they can be relocated again. Forceful moves destroy them. Chu Du evacuates many Hei Fan grotto-heaven resources into his immortal aperture, but multicolored guts cannot be taken away in the short term. Fang Yuan is asked to defend the trench for half of whatever multicolored guts remain. ^{ch. 1177}

Some days earlier, Fang Yuan can still hide inside the trench and guard the multicolored guts. ^{ch. 1178}