And https://en.wikipedia.org/wiki/Zhong_Shanshan "He dropped out of elementary school during the Cultural Revolution and found work in construction."
https://en.wikipedia.org/wiki/Xu_Jiayin "Xu Jiayin was born to a rural family in Jutaigang Village, ... His father is a retired soldier who participated in the Second Sino-Japanese War in the 1930s and 1940s. After the establishment of the Communist State, he became a warehouseman in his home-village. Xu's mother died of sepsis when he was 8 months old. He was raised by his paternal grandmother. After high school, he worked in a cement product factory for a few days and then worked for two years at home."
https://en.wikipedia.org/wiki/Qin_Yinglin "Qin was born in 1965 in Hexi Village... He grew up in poverty.
In 1982, when Qin was in high school, his father saved up money and bought 20 pigs, but all but one died. This motivated Qin to study pig farming at university, so that he could help people in his village earn money raising pigs."
I'm not sure billionaires like Eric Yuan ("collected construction scraps to recycle copper for cash"), Jay Chaudhry ("Chaudhry was born in Panoh, a Himalayan village without running water"), Jan Koum ("When he was living on welfare, Jan Koum's family collected food stamps a couple of blocks"), Isaac Perlmutter ("He emigrated to America, arriving in New York City with only $250"), and Romesh Wadhwani ("He contracted polio at age of 2") count as "super rich in your own country" that would thus "have a lot of opportunity".