People record the previous history in paper books, but the quality is not good, so in order to make it easier to record the knowledge in e-books for future generations to read
People record the past history in paper books, but the quality is not good, so in order to make it easier to write knowledge on e-books for later people to read.
People record the past history in paper books, but the quality is not good, so in order to make it more convenient to record knowledge in e-books for future generations to read<br>