Li Yuan discarded distracting thoughts and began training.
He talked to Cui Wuji, who would fly upstream of the waterfall to gently throw objects down.
First small stones, then thick needles, thin needles, and then feathers.
Li Yuan needed to sense these objects falling by listening, and accurately catch them as they landed near him.
Time passed second by second...
The snow-white water flow, accompanied by deafening roars, constructed the whole world of sight and sound.
Li Yuan closed his eyes, listening for the subtle sounds that could come at any moment amidst the thunderous cascades.
Swish...
Li Yuan suddenly sensed something, swiftly reaching out, he caught a stone.
He threw it away and continued.
A moment later...
Ding!
A faintest of sounds came from beside him.
Li Yuan glanced over.
Cui Wuji had thrown three needles, two thick and one thin, and he had missed one.
Instead of being angry, he was delighted.
Indeed, this is useful...
