Pang Family's Helping (MK40)

KOAN:

Layman Pang and his daughter Lingzhao were selling bamboo baskets. Coming down off a bridge he stumbled and fell. When Lingzhao saw this she ran to her father’s side and threw herself on the ground.
“What are you doing?” cried the Layman.
“I saw Daddy fall down, so I’m helping,“ replied Lingzhao.
“Luckily no one was looking,“ remarked the Layman.

—PZI Miscellanous Koans, Case 40