yang jian ground steel

When they approached the river, Yang Ren yelled out to Yang Jian, who quickly burned Krakucchanda's spells with his own real samadhi fire. Pointing at the ground, he then turned the earth to steel, trapping Zhang Kui with copper walls and iron partitions. Wei Hu quickly cast his club into the air, reducing Zhang Kui to powder.

Investiture of the Gods - Translated by Gu Zhizhong