Why is it necessary to learn Chinese characters well to learn Chinese well?

<p data-flag="normal" style="color:#333333;font-weight:normal;font-size:16px;line-height:30px;font-family:Helvetica,Arial,sans-serif;hyphens:auto;text-align:justify;">Thank you for watching!&nbsp;</p><p data-flag="normal" style="color:#333333;font-weight:normal;font-size:16px;line-height:30px;font-family:Helvetica,Arial,sans-serif;hyphens:auto;text-align:justify;"><span>I created a detailed pdf file for this Audio (you could also watch video on my YouTube channel). The pdf contains pinyin, translation and detailed explanations of some important words, words and phrases. If you want to get the pdf version of this video, please send an email to sign up for my Chinese reading plan. This program can help you accumulate more Chinese vocabulary and improve your Chinese listening and speaking skills The most important thing is that this can improve your Chinese reading level!&nbsp;</span></p><p data-flag="normal" style="color:#333333;font-weight:normal;font-size:16px;line-height:30px;font-fam...