C1166 Two Minutes and Eleven Seconds

Jiang Yan approached the 90kg stone lock, which appeared deceptively modest in size—just over 50 centimeters in length, about 40 centimeters in height, and roughly 30 centimeters wide.

Such stone locks were once the training tools of choice for martial artists looking to build their strength, but these days, they're a rare sight.

The handle of this particular stone lock was worn smooth