At that time , he began to learn woodcutting art .
Li returned to Guangzhou in 1932 , after the Mukden Incident broke out , and served once again as a teacher at the art school where he had studied .
At that time , Li began to learn woodcutting art .
Li returned to Guangzhou in 1932 , after the Mukden Incident broke out , and served once again as a teacher at the art school where he had studied .