Red, orange, yellow, green, cyan, blue, and purple

Gu Xin turned around and blinked innocently, " "Uncle, grandma won't let me tell you."

Uncle Gu glanced at grandma Gu, then turned his head back. "It's okay, just tell me quietly. If you don't tell me, I won't feel comfortable! I'm just curious, really, I won't tell anyone."

Gu Xin also glanced at grandma Gu. She raised her hand, clenched it into a fist, and extended her little finger.

Uncle Gu immediately understood and hooked it with his little finger. "I've told others that I'm big dog!"

Gu Xin: " if you lie, you're a dog!  

"Have you ever seen a dog my age?"

alright, " Gu Xin said after a moment of silence, " if uncle tells anyone, then he'll be a big dog!

Uncle Gu pursed his lips and nodded.

Gu Xin glanced over at grandma Gu, " "It was very loud. Mrs. Li and my mother were having a good time talking and they took a few photos! I'm afraid she'll hurt herself!"