In this series, we tackle the most common question in every newbie's mind: "What's with the tone changes?" Along the way, you'll learn the tone change rules for 不, 一, two third tones, and three third tones. Practice and familiarize yourselves with the sounds, and you'll be a tone master in no time. Generally we do not see tone change rules applied in written texts, i.e. we do not see the change of tone mark reflected in written pinyin. Precisely because of this, tone change rules are confusing and burdensome to beginning learners. To help our users to master tone change rules more quickly, we have deliberately marked the changes so that they are more easily recognized and more discernible to learners. So join us in this newly designed tone change series, and let us know your thoughts!