What does it mean by 'a prodigal who returns?

In the backyard of Lai Fu Restaurant, Lu Xun said to Lin Chan, "From today onwards, stay here."

Given that Lin Chan now held a Blue Title, Lu Xun was worried she might attract unwanted attention from players. She wasn't one to speak up, and her timid nature could potentially invite trouble.

Lin Chan nodded obediently, conforming to her beautiful master's wishes.

"In the meantime, practice here by yourself. I need to step out," Lu Xun told Lin Chan.

Without Shen Yan hindering her, Lu Xun believed that Lin Chan might even become a self-taught expert.

The book "Qi Consumption Technique" from his second senior sister contained exhaustive details. There was no need for him to point out anything. Besides, he wasn't even sure what to point out.

As far as understanding "Qi Consumption Technique", Lu Xun was as clueless as one could get.

The moon hung high in the night sky.