Is walking to school's sister dead or not?

Dead. In the movie walking to school, my sister didn't put away her sneakers when she got on the ropeway, and the shoes for her brother fell out of her back pocket. She reached for it, accidentally loosened the pulley, fell into the Nujiang River and lost her life. At the end of the movie, a bridge was built by the Nujiang River. The local children no longer had to slide the rope, but her sister Na Xiang never came back.