If you are learning Chinese, you shall realize the importance of Pinyin and Pinyin tones. Without good knowledge of Pinyin, it’s hard to go anywhere in terms of learning Chinese. Check out this great free tools in helping you learning Chinese Pinyin .
This website also contains a great Pinyin table, [...]

In Mandarin Chinese it happens that sometimes we change the tones of certain Pinyin syllable to improve the clarity or ease pronunciation difficulties, here are some general rules.
1. The 3rd tone is a changeable tone. When two 3rd tones come together, the first 3rd tone should be [...]

There are four tones in Mandarin Chinese Pinyin, plus one neutral tone(or called “no tone”).

First tone in Chinese Pinyin
The first tone is marked as a straight line like this¯. It has a long and sustained sound (as if singing a note).
Second tone in Chinese Pinyin
The second tone is marked upwards like [...]

There are three parts in Chinese Pinyin: the initial, the final, and the tone. In Chinese pinyin, the tone, initial, and final are represented as follows:
Tone
The tone is represented by a tone mark placed on top of the syllable. There are exactly four tone marks: ˉ, ˊ, ˇ, and ˋ. The two dots on ü [...]