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!

dēng, déng, děng, dèng

first tune

dēng

ascend; climb 登 dēng

onto land from the sea 登陸 dēng lù
ascend 登 dēng	land 陸 lù

mountaineering; climb a mountain 登山 dēng shān
climb 登 dēng	mountain 山 shān

lamp; lantern 燈 dēng

turn on the light 開燈 kāi dēng
open; turn on 開 qiān	lamp; light 燈 dēng

turn off the light 關燈 guān dēng
close; turn off 關 guān	lamp; light 燈 dēng

third tune

děng

wait; await 等 děng

Wait a moment! 等一下 děng yí xià
wait 等 děng	a short while 一下 yí xià

fourth tune

dèng

glare; stare 瞪 dèng

Don't glare at me! 別瞪我 Bié dèng wǒ
Don't 別 Bié	glare; stare 瞪 dèng	me; I 我 wǒ

Chinese characters also pronunced dèng