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'Baby Ji' Use reverse thinking to solve the problem of elderly people's difficulties in understanding their children's lives - transfer photos and text on the Internet to an easy-to-use, friendly machine which can print them out on the paper. The old can also use this machine to scan and convert paper letters into electronic versions and send them to their children. This method can reduce the learning costs and burdens for the elderly, and let the old enjoy the convenience of communicating with their children and understanding each other.