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Open the millet box settings and have a child lock set in the common settings personal. Open and activate the child lock, the child lock is divided into two options for the parent password and child answer unlock. If you do not want your child to watch TV for a while, you can just open the Parental Code and enter 4 up and down and 4 keys to set the 4-8 digits password. But Xiao Bian does not recommend this model, because it may cause children's dissatisfaction, you can unlock the children's answer, let the children enter the TV after answering. 
When there was no smart TV or network box, children wouldn’t have to leave school to watch a big windmill and animation city. They should put down the remote control, and rush to learn or do other things. But with these smart devices, children can finally broadcast cartoons, TV shows and even games on the TV. The problem of children watching TV all of a sudden becomes even more serious. If you break the internet or lock your TV, you must have no peace with your children. Do not know if you are still worried about this problem, if you use the small millet box home, then Xiao Bian will teach you a trick to solve this problem.
Turn on the children's answer unlock mode, you can set the number of questions, the type of question and the degree of difficulty. The number of answers currently supports only 5 or 10 questions, and the type is currently only mathematics, and the degree of difficulty is divided into three modes: entry, intermediate, and advanced. Only children answer all the questions you set up before they can enter the TV operator interface. This time the children will have to study hard for their favorite TV!