In the village where she was bought as a "commodity", she became the only "teacher". Knowledge is the only weapon, and literacy classes are secret positions. Zhang Yan used chalk to write "rights" and "freedom" on the blackboard, teaching them to the women in the village and even to herself in the dark night. When the light from the outside world finally penetrated the cracks in the mountain, she faced the most difficult choice: should she continue to be the docile "Teacher Zhang", or become the "Zhang Yan" who broke the shackles? This is an escape premeditated by education.
