1. Ma Jiajue won the second prize in the "National Olympic Physics Competition".
2. A classmate in Ma Jiajue's dormitory once urinated on his quilt.
3. In winter when the temperature was relatively low, Ma Jiajue's classmates in the dormitory once gave him one or two yuan to let him wash clothes for them. As Ma had no money, he washed them.
4. In prison, Ma Jiajue put on the best clothes he had ever worn in his life-----prison uniform.