Why does Yu-Ching Fei call his little brother?

Yu-Ching Fei is the youngest in the family, and his brother Chang Fei is the big brother in Taiwan Province's hosting industry, which is very prestigious. Chang Fei was addressed as "Brother Figo".

In a program interview, Chang Fei said: Yu-Ching Fei is called "little brother" by everyone at home. In the entertainment circle, everyone calls Yu-Ching Fei "Little Brother" for kindness.

I think this statement is more reliable, because it is his brother Chang Fei's answer to why Yu-Ching Fei called his little brother.