TALES OF THE 24 EXEMPLARS: LAO LAIZI

Filial Piety of Lao Lai  Zi (1122 B.C.)

When Lao Lai was seventy, his parents were still alive. He wanted to give them cheer and made them laugh daily. Sometimes he he would deliberately fall down while holding some water when he passed his parents; sometimes he wore the clothes of a clown and clowned around in front of his parents; while at other times he acted as a child and played beneath his parents' knees.

Reference: http://www.yogichen.org/cw/cw43/bk144.html