Initials
Finals
Tones
Pinyin
Pitch value
100

b

100

ao

100

生 sheng

1

100

[問]

wèn

100

first tone

55

200

k

200

o

200

老 lao

3

200

xìng

200

second tone

35

300

sh

300

en
300

听[聽] ting

1

300

也 

300

third tone

214

400

t

400

i

400

我说[我說] wo shuo

3 1

400

zhōng

400

fourth tone

51

500

学[學]

x

500

ia

500

再见[再見] zai jian

4 4

500

shì

500

neutral tone

It is determined by the stressed syllable immediately before it.