For families with many children, the indoor children's wisdom and courage challenge is a tough and warm "bond of joy" that tightly connects the hearts of brothers and sisters. In one adventure after another, the children's bodies become stronger and more flexible through running, climbing, and jumping, and their minds gradually mature through collaboration, sharing, and facing success and failure. They learned to listen and express themselves through physical coordination, understood responsibility and commitment through mutual support, and gained sibling friendship that money cannot buy through day-to-day companionship. What children gain from the wisdom and courage challenge is never just the happiness of the moment - it is the empathy that grows in collaboration, the willpower that is honed in challenges, the sense of security that is precipitated in the company of siblings, and it is the growth power that is enough to support them in facing the storms of life in the future.