fix(curriculum): An introduction of Chinese characters in the pinyin chapter (freeCodeCamp#64755)

Author: miyaliu666

curriculum/challenges/english/blocks/zh-a1-learn-initials/63901cd511d8440de91ca195.md

@@ -24,7 +24,7 @@ To pronounce `ba`, begin by putting your lips together to pronounce `b`. Immedia
 
 Let's practice pronouncing `b` and the syllables, and then use `ba` in different tones as an example.
 
-Below is a table showing how Pinyin with different tones can represent different Chinese characters. Don’t worry about learning the characters now.
+In this lesson and in later lessons, you will see that when the tone of a syllable changes, it can represent different Chinese characters. These are only examples to help you understand tones, and you don't need to worry about learning the characters for now.
 
 | Pinyin   | Character|
 |--------|----------|

curriculum/challenges/english/blocks/zh-a1-learn-single-finals/606104b17eec94d3295719df.md

@@ -26,6 +26,8 @@ Learning Pinyin first helps you learn Chinese more easily. It lets you:
 
 - look up new words using their sounds.
 
+While there's a lot to learn about Pinyin, you don't need to master it all before starting to use Chinese. In this chapter, you'll learn new Pinyin concepts while practicing to use them in forming common Chinese words.
+
 ## Pinyin Syllable
 
 A syllable is a single unit of pronunciation. In Pinyin, each syllable represents a character and has three parts: