Geng looks very young, just in his early thirties. I looked up Geng's information online, but there was no age introduction.

Geng Huawei said in the program that he joined the army after graduating from junior high school, and this year is 1985. If Geng Huawei entered school at the age of 7, he would be 15 when he graduated from junior high school, so it is estimated that he is 45 years old now.

Yan Dangdang said in the previous "Malanhua" program that Geng was 13 years old when he joined the army. If Yan Dangdang's statement is true, then Geng is now 47 years old. However, Geng is unlikely to enter school at the age of five.

Therefore, it is more reliable to say that Geng was born in 1970 and is 45 years old.