1, topic design is more practical: 53 papers are more practical in topic design, focusing on cultivating students' practical problem-solving ability. The topic is closer to real life and work, which can train students' practical application ability and innovative thinking. However, the title design of all excellent papers is single, which is not as flexible as 53 papers.

2. The topic difficulty is moderate: the topic difficulty of 53 papers is moderate, which is more in line with the students' learning progress and ability level. It can provide appropriate challenges, stimulate students' interest and motivation in learning, and at the same time, it will not give students too much pressure, which is conducive to students' active participation and improvement.