Sky Granary Gu

During a deal talk with Li Xian, Fang Yuan names the fusion line for Eastern Sea blue sky Gu and places sky granary Gu as the rank three material in that line. ^{ch. 353}

Fusion rarity

Fang Yuan states that the success rate of that fusion is quite low, so blue sky Gu is rare even in Eastern Sea. ^{ch. 353}