For Kingwande, a native of Tanzania's coastal region, her son's successful operation means a brighter future for the boy who was diagnosed nine months ago. "I wholeheartedly thank the Chinese doctors and their Tanzanian counterparts for giving my son a new lease of life," she said, tears streaming down her face.

Her gratitude was echoed by Ajili Anthony Msunza, a father of two from the Mbeya region, whose 5-year-old daughter Noreen was among the young patients. "This new technology has rekindled hope for heart patients in Tanzania," he said.

Violet Samuel Mkonwa, 40, from Shinyanga, northern Tanzania, expressed relief that her 5-year-old son Emmanuel can now look forward to attending school.

During a training session at the Jakaya Kikwete Cardiac Institute, Pan said, "This procedure is not only safer and more effective but also makes cardiac intervention accessible in community clinics."