It wasn't just an empty warning, the two of them had been training non-stop since morning until midnight, and it looked like they wouldn't stop any time soon before the next morning arrived.
Of course, there was a lunch break, a dinner break, and also a bathroom break, but Jun was still very exhausted when he was taking a precious ten-minute break right in the middle of the night.
"Is your body made of steel? Why don't you feel tired after training all day?" Jun tried to catch his breath while leaning the back of his head against the wall of the practice room. His right hand was holding a water bottle, and he was furiously drinking the contents to replace the fluids his body had secreted during training.
Zhang Hei stood a few meters in front of him, but then he brought his feet towards him before placing his body next to him.
