Feasibility and Preliminary Efficacy of a Child Life-Based Breathing Exercise Program for Children Recovering From Severe Pneumonia: A Pilot Randomized Controlled Trial

The goal of this pilot randomized controlled trial is to evaluate the feasibility and preliminary efficacy of a child life-based breathing exercise program for children recovering from severe pneumonia. The main questions it aims to answer are: * Is the child life-based breathing exercise program feasible for hospitalized children recovering from severe pneumonia? * Can the program improve caregiver satisfaction and promote recovery in children with severe pneumonia? Researchers will compare a child life-based breathing exercise program combined with routine health education with routine health education alone to determine whether the intervention improves rehabilitation outcomes. Participants will: * Receive either routine health education alone or routine health education combined with the child life-based breathing exercise program * Participate in breathing exercise training during hospitalization * Complete assessments of caregiver satisfaction and clinical recovery outcomes, including improvement in chest imaging findings and time to resolution of symptoms such as cough, fever, and dyspnea.