时间成谜

So,let me have a new start from thirty.

These days,my little son is learning,practicing pronunciation. He can say such simple words as ‘Papa’, ‘Mama’,'hot’,'dark’,'duck’…….He says ‘hot’ aloud whenever seeing something with smoke or steam, even my Vitamin C drink.

I tried to tell him who is ‘papa’s papa’. At the first time,he knew it called “grandpa”. And who is ‘mom of mom’, then ‘papa’s mom’,'mom’s papa’.

Finally, I ask the little pet “how to say papa’s papa?”
He smiled, “a-papa”.
“Then mom of mom?”
“a-mama”