Chi Hang and anh Do were the children of my uncle Duc 's . The only paternal grandchildren of my paternal grandparents that were born before me . When I started to know things , they 'd already left for Canada , so I actually did n't have to compete for love and attention . I enjoyed being the only " jewel in the eye " of grandpa for 5 straight years ( until my sister was born ) .
Question: Why did the narrator 's grandpa devote so much attention to them ?
The answer to the above question:


They were the only grandchild near grand pa .