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
Click the framed calligraphic Chinese symbol icons
to link more related multi-character Chinese words!

gāng, gáng, gǎng, gàng

first tune

gāng

tough very recently 剛 gāng

robust; vigorous and energetic 剛健 gāng jiàn
tough 剛 gāng	healthy 健 jiàn

just now; just recently 剛剛 gāng gāng
very recently 剛 gāng	very recently 剛 gāng

steel 鋼 gāng

Iron Man 鋼鐵人 gāng tiě rén
steel 鋼 gāng	iron 鐵 tiě	person 人 rén

Chinese characters also pronunced gāng

third tune

gǎng

harbor; port 港 gǎng

fishing port 漁港 yú gǎng
fishing 漁 yú	harbor; port 港 gǎng

fourth tune

gàng

horizontal bar 槓 gàng

lever 槓桿 gàng gǎn
horizontal bar 槓 gàng	shaft; pole 錢 qián