Look up his history, he was chosen for this position because before that he was on a mission against corruption in local governments. He moved from province to province taking down corrupt politicians.
The party noticed him.
His life before politics is also interesting, forcibly sent to a rural area in his early 20s to work, lived in cave reading books and working 12 hours a day doing farm labour for years.
I'm not saying the Chinese government is even good, just this man is who you want to be in charge if anyone is going to be.
He knows what its like to be hungry, he knows what hardwork means.