Wei Yan is a capable general who has long been distrusted by many in the Shu court, and Zhuge Liang is said to have predicted that he might one day rebel. After Zhuge Liang's death, a dispute over the retreat leads to open conflict between Wei Yan and Yang Yi, and Wei Yan is killed in the fighting. The novel presents his end as a rebellion, though readers can see that many of his actions were responses to provocation. That tension makes him an excellent figure for teaching argument from conflicting evidence.

Students often struggle with evidence that points in more than one direction. They tend to select the details that support their position and ignore the rest. A strong argument, by contrast, acknowledges inconvenient facts and explains why the overall conclusion still holds. Wei Yan's story contains many such inconvenient facts, which makes it ideal practice material.

Grading this skill requires attention to how students handle counterevidence. A paper that mentions it briefly and moves on is different from one that engages with it seriously. Teachers need to look for those differences, and a rubric with a specific descriptor for counterevidence helps. Without it, the graders may reward the most confident voice rather than the most careful reasoning.

Teaching the Use of Counterevidence

A practical technique is to ask students to build a two-column table before writing. One column lists evidence that Wei Yan was a traitor, such as his refusal to follow the order to retreat, and the other lists evidence that he was provoked, such as Yang Yi's earlier hostility. Students then decide which column carries more weight and why. The table makes the complexity visible and prevents one-sided essays.

• Presents evidence on both sides of the question
• Explains why some evidence carries more weight than other evidence
• Takes a clear position despite the complexity
• Avoids dismissing contrary details without explanation
• Uses accurate references to the text throughout

Moving Students Past Both-Sides Summaries

A related problem is the essay that lists both sides and refuses to decide. Students sometimes believe that neutrality is safer, and the result is a paper without a thesis. Teachers should explain that acknowledging complexity is not the same as avoiding a position. A strong essay can say that the question is difficult and still commit to the most defensible answer.

Feedback can reinforce this point with a direct question, such as "which side do you find stronger, and what makes it so?" This prompts students to move from description to judgment. It also shows that the teacher values the reasoning behind the decision. The next draft usually has a clearer thesis and a more purposeful structure.

Scaling Feedback on Argument Quality

Argument essays are time-consuming to evaluate because each one requires the teacher to follow the reasoning from start to finish. When dozens arrive at the same time, the quality of feedback suffers. Teachers may focus on surface issues like grammar because those are quicker to address. The deeper problems in reasoning then go unaddressed.

AI-assisted grading can examine the structure of each argument, checking for a clear thesis, supporting evidence, and engagement with counterevidence. The feedback can identify exactly where an essay dismisses a contrary detail without explanation. Teachers review the results and focus on the cases that need deeper conversation. The balance gives students attention to the reasoning that matters most.