The area where their fight took place was frozen. The temperature dropped to an extreme condition, the grasses, leaves, and trees turned into ice sculptures after Qiqi's devastating Battle Skill, Dance of The Ice Goddess, struck the area.
This technique also has its own drawback, despite its destructive force to the vicinity. This technique also devours a hefty amount of the user's Yin Qi Energy. One slight mistake, and the users would be done for. It shows on Qiqi's fingertips which gradually freeze and turn red as second passes. The longer she casted the Battle Skill, the closer she was with her own death.
Ling Zhao, however, as someone who cultivated Yang Qi energy through the Convergence Cultivation, he had the Purest Yang Qi stored inside his Dantian and maintained his body temperature.