The Water of the Demon Earthworm should be the main ingredient for making Demon Summoning Soil. However, with only the Water of the Demon Earthworm, it was still impossible to produce the soil.
After identifying the Water of the Demon Earthworm, Fang Qingyuan quickly returned to the underground cavern on Fire Melt Island. He attempted to obtain more of the water through the altar.
However, after several days of testing, Fang Qingyuan discovered that the altar's daily output of the Water of the Demon Earthworm was constant, yielding only about seven or eight pounds.
Fang Qingyuan guessed this was likely due to the Demon Earthworm connected to the altar having a limited daily appetite.
Fang Qingyuan tried watering the Longevity Vine with the Water of the Demon Earthworm, but he found the results unsatisfactory. A given amount of the water was only one-third as effective as the same amount of Demon Summoning Soil.
