The words in the book are dead, and the words in the video can move, but they are not controlled by the child. Tango designs the letters into building blocks, and the child has the right to dominate. He can pick up the letters, listen to the pronunciation freely, and easily get how to pronounce the compound letters. The words in the book are dead, and the words in the video can move, but they are not controlled by the child. Tango designs the letters into building blocks, and the child has the right to dominate. He can pick up the letters, listen to the pronunciation freely, and easily get how to pronounce the compound letters. The words in the book are dead, and the words in the video can move, but they are not controlled by the child. Tango designs the letters into building blocks, and the child has the right to dominate. He can pick up the letters, listen to the pronunciation freely, and easily get how to pronounce the compound letters. The words in the book are dead, and the words in the video can move, but they are not controlled by the child. Tango designs the letters into building blocks, and the child has the right to dominate. He can pick up the letters, listen to the pronunciation freely, and easily get how to pronounce the compound letters. The words in the book are dead, and the words in the video can move, but they are not controlled by the child. Tango designs the letters into building blocks, and the child has the right to dominate. He can pick up the letters, listen to the pronunciation freely, and easily get how to pronounce the compound letters. The words in the book are dead, and the words in the video can move, but they are not controlled by the child. Tango designs the letters into building blocks, and the child has the right to dominate. He can pick up the letters, listen to the pronunciation freely, and easily get how to pronounce the compound letters.