In the afternoon, Mr. Chen handed out the revised math test papers to his classmates one by one. In the classroom, students who have got papers look at each other's scores. After Chen Xiao handed out the paper, he was glad to see that he got 100. However, he carefully read the questions on the test paper. Looking at it, suddenly, Xiao Chen found that the second small question of the fifth big question was written wrong, but Mr. Chen corrected it correctly. He looked at the score of 100 on the paper. Little orange thought, "I can't get the score of 100 this time, and I can't erase the wrong question quietly and write it correctly."

Xiao Chen ran to Mr. Chen's office with a newspaper. He went to Mr. Chen and pointed to the corrected question and said, "Mr. Chen, you have changed this road wrong." Teacher Chen looked at it carefully and said, "Yes, I corrected my mistake." Then, Teacher Chen changed the beautiful score of 100 to 99, gave a thumbs-up and said, "You are an honest man."