The following video demonstrates each syllable of the pinyin structure
and the exercise of pinyin/zhuyin with basic Chinese 4-tune pronunciation

Mandarin pinyin tunes
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to link more related multi-character Chinese words!

fēi, féi, fěi, fèi

first tune

fēi

not; wrong 非 fēi

right and wrong 是非 shì fēi
yes; right 是 shì	not; wrong 非 fēi

to fly 飛 fēi

airplane 飛機 fēi jī
fly 飛 fēi	machine 機 jī

Chinese characters also pronunced fēi

second tune

féi

fat fertile 肥 féi

obesity 肥胖 féi pàng
fat 肥 féi	obese; fat 胖 pàng

fertilizer 肥料 féi liào
fertile 肥 féi	material 料 liào

Chinese characters also pronunced féi

third tune

fěi

bandit; outlaw 匪 fěi

brigand; bandit 土匪 tǔ fěi
local; native 土 tǔ	bandit; outlaw 匪 fěi

Chinese characters also pronunced fěi

fourth tune

fèi

expense wasteful 費 fèi

tips; gratuity 小費 xiǎo fèi
little; small 小 xiǎo	expense 費 fèi

waste; squander 浪費 làng fèi
unrestrained 浪 làng	expense; wasteful 費 fèi

bark (of a dog) 吠 fèi

lung 肺 fèi

abolish 廢 fèi

useless words; talk nonsense 廢話 fèi huà
abolish 廢 fèi	talks; words 話 huà

Chinese characters also pronunced fèi