Which episode of the little goddess Hua Ling talked about the photos of their parents?

That's not their parents, that's themselves. Hualing and harmony have become smaller. Hualing forgot the past and remembered the harmony. As for Ji Xiang, she is their child.

2 1 Episode Auspicious and the Man with Divining Glasses

In order to catch Ji Xiang, Beowulf Maruko pretended to be a fortune teller.

Episode 22 and Harmony Jun? Sacrificial ceremony

What happened in the dream world, and I saw the future harmony and ringtone. .......

Episode 23 Go to Maru's house

Play with princess Lu and see husband fog whose personality has changed? !

Episode 24 There are four-eyed boys everywhere.

Wu Maruko was possessed, strengthened and dispersed, and was defeated by Hua Ling and He Yin one by one.

Episode 25 The labyrinth of Zeus' ring

Zeus' ring created a maze, which disoriented harmony and flower bells. Nishikiori Michiru awakened the power of the ring. When they thought it was a breakthrough, Zeus' ring miraculously recovered. ...

Episode 26 Children Lost in Time and Space

Hua Ling regained her memory (she and Yin are husband and wife), transformed herself with her ring and defeated the enemy! Harmony disappeared, but after the ending song, it was said that Hua Ling returned to modern times, and finally harmony came together.