Great Genius

The third pass, on the second level of the Wu Tower.

Having gotten through the arrow corridor, Zhang Ruochen walked towards the third pass.

He opened up the door and saw a transparent and glittering jade tablet standing beside a 10-foot square pool. A line of words appeared on the jade tablet. "Count the number of ripples in the pool, no more than 10 ripples error"

"Count the ripples, what does that mean?"

He didn't react as he heard the splash.

"Splash!"

A silver coin had fallen onto the calm surface of the pool.

Immediately, ripples appeared in the center of the pool where they radiated to the outer edge.

Zhang Ruochen didn't understand the purpose of this pass, but he concentrated on counting the ripples on the water's surface. "One, two, three..."

The ripples became thinner and weaker, making them more difficult to count.