1, due to personality: In the article "Keeping the Taste of Roots", Lao Wang is introverted and inarticulate. In the face of other people's doubts, he doesn't know how to defend, and he doesn't think it is necessary to defend.

2. Language barrier: Lao Wang is a farmer, without a good education, and his language expression is not fluent enough to accurately express his thoughts and feelings, which leads to his inability to effectively defend himself.