As you learned, a general Chinese character is a combination of consonants and vowels that represents a word. However, in Chinese, there are 16 unique characters called 整体认读(Zhěngtǐ rèn dú), which are not combination consonants and vowels but gives a meaningful word.
In this video, you will get to know not only these 16 characters but also the proper way of pronouncing such words with tones. Besides, in our first lesson, we explained to you how to pronounce six vowels accurately. Therefore, this lesson also will teach you the pronunciation of the rest 18 vowels of 24 total vowels with relevant tones.
Getting a sound knowledge of these special characters( Zhěngtǐ rèn dú ) and vowels pronunciation with tones definitely will help you fluently speak Chinese like a native speaker.