. >> a teacher at this school in kochi city tested positive to the coronavirus. as a shock to the principal. then a few days later, she grew even more concerned when she arrived outside a school gate. >> translator: there have been vicious messages all over the country. when i saw something at the gate, my heart started pounding. >> reporter: but seeing it close up, she realized it was in a child's handwriting. >> translator: keep your spirits up, a greeting that med ade me happy, it really gave me encouragement. >> reporter: she had no idea who put the message there, but all the tension and worry she'd be feeling. she said it brought tears of relief to her eyes. when the news of this incident reached a nearby elementary school, the teachers thought it could make a powerful lesson for their students. >> translator: i thought it was very important for all the children to hear that such a heartwarming thing had happened. >> reporter: it was introduced to the sixth grade class. the teacher explained to the students what had happened. she asked them to imagine what w