Su'en fiddled with his silk threads and trick puppets until late into the night, producing quite a few finished pieces.

As dawn approached, feeling somewhat cramped, he began to meditate cross-legged on the carpet.

He needed the necessary rest to replenish his energy.

Meditation required enduring solitude and often demanded strong willpower. However, once accustomed, the efficiency of practice would increase, and the need for sleep would decrease. Efficient meditation could have the effect of deep sleep, providing better recovery for the body and increasing the "energy" within.