Chingón is a versatile and very Mexican slang term that can mean 'badass', 'awesome', 'great', or 'expert'. It's a strong word that conveys a sense of power and capability.
In the context of the song, the lyric "Ser chingón pero sin chingarse a la gente" means "To be badass but without screwing people over." It highlights a code of conduct: achieving success and being powerful, but doing so ethically and without exploiting others. This makes it an interesting word choice that reveals a cultural value.
"Y Me Verán" is a corrido tumbado where the singer looks back at growing up poor and now living the life he worked for. He doesn't go looking for trouble, but he won't be pushed around either, and he respects anyone who respects him.
Most of the song is a list of the good life he's earned: fine shoes at a nice restaurant, a new truck loaded with cash to spend, riding in boots and a hat, celebrating with friends on the beach. It's proof that the poverty he came from didn't stop him.
But he's careful to say success hasn't changed who he is. He credits his parents for teaching him to help others, wants to be tough without being cruel to people, and keeps his table open to anyone, rich or not.