Dyes

Ning was standing in a meadow near the river. The river was nearly frozen solid and there were patches of snow on the ground. The winter season was right here. 

People were all wearing much warmer clothes nowadays.

BAM

Ning was struck with a fireball to the face. However, he didn't flinch in the slightest. From behind his back, he was struck with a stone with a strong force. 

"The fireball is good, but imagine it being hotter," Ning said. 

Another fireball appeared on his face, this time it was much hotter than the one before and packed a lot more punch. 

"Good. That was way better," Ning said. Then suddenly, he twisted his head so that the stone flying from behind him missed him. 

Midair, the stone changed trajectory and came flying back towards him. Ning caught the stone between his two fingers and said, "not bad. You managed to change the direction quite fast this time. However, I am sure you can do better."