Lao Bei Fong is the father of Toph Bei Fong, Aang's friend and earthbending master. Lao cares deeply for Toph and tries to protect her at all costs. However, he doesn't realize what is best for her. He thinks that "She is blind and tiny and helpless and fragile." While he is talking to Master Yu, Toph's teacher, he says "I'm pleased to hear that Toph's private lessons are going well, but I want to be sure that she's not trying anything too dangerous. "
Lao always holds her back and doesn't want her to do anything dangerous because she is blind. Him and Toph's mother treat her like she is helpless. When he finds out that she is a master earthbender, instead of seeing how strong she really is, he only tightens his grip on her and thinks that she should be guarded even more closely. He thinks he's let her have far too much freedom and says she will be cared for and guarded 24 hours a day.