C268 A Deadly Punishment

Coach is more strict, the kids don't dare play around, learn very seriously.

Hsu Muzhou held back his anger and vented it all by holding his breath. His progress could be said to be very fast.

An hour later, the three of them successfully learned to hold their breath.

"Let's call it a day. When we go back tonight, we can receive a basin of water and continue to practice holding our breath