Before revision: Another important Hydraulic Engineer in China, Ximen Bao was credited of starting the practice of large scale canal irrigation during the Warring States period (481 BC-221 BC ), even today hydraulic engineers remain a respectable position in China.
After revision: Another important Hydraulic Engineer in China, Ximen Bao was credited of starting the practice of large scale canal irrigation during the Warring States period (481 BC–221 BC ), even today hydraulic engineers remain a respectable position in China.