Jiang Shuichang, 51, a teacher with Daokeng Primary school, gives a math lecture in Gaodao village, a mountainous enclave in southeast China's Jiangxi Province, on Dec. 25, 2009. Jiang, the only teacher in this remote village, has been working for 29 years in the one calssroom school gives 24 students of two grades elementary education. [Xinhua]