Incidentally, Yu Hua actually started out on a career as a dentist. The following paragraph is a quote from the Times article linked above.
He claims he became a writer because he hated his job: “the inside of a mouth is one of the ugliest spectacles in the world.” In the early ’80s he was living in a small town between Shanghai and Hangzhou. From his window he often observed workers of the local Cultural Bureau, the Chinese state’s salaried writers and artists, loafing in the streets. “We were all very poor in those days,” Yu recalled. “The difference was that you could work hard to be poor as a dentist, or you could do nothing and still be poor as a worker in the Cultural Bureau. I decided I wanted to be as idle as the workers in the Cultural Bureau and become a writer.”