When others praise you to your face, you might question their sincerity, but Jin Can Zi wouldn't.
What he says, Nezha doesn't need Divine Skills to know it's sincere. That's why he's said to have an innocent heart. Jin Can Zi has already been taken in as a disciple by Old Li, and it's evident he's quite favored by him, always being kept close by his side.
Nezha, much like seeing a relative's child during the New Year, patted Jin Can Zi's little baldy, reached into his sleeve, and took out a green Lotus Platform, saying, "This is our first meeting, and I haven't prepared much. This 'No-demon Green Lotus' is for you. I hope you can be like the green lotus, emerging untainted from the mud and remaining pure."
"Also, don't be so formal, just call me brother."
The little baldy obviously liked the Lotus Platform very much but still looked at Old Li. Seeing Old Li nod, he performed a Buddhist salutation before running over to play with the Lotus Platform.