How to pronounce 頭腦 in Cantonese (3 out of 8):

那時香港人的頭腦靈活和「執生」的靈活程度
The flexibility of Hong Kong's minds and the flexibility of the "life" of the time.

Cantonese Sentence Breakdown

那時 naa5 si4
then
香港人 hoeng1 gong2 jan4
Hong Kong people
dik1
of
~'s (possessive particle)
(used after an attribute)
(used to form a nominal expression)
(used at the end of a declarative sentence for emphasis)
truly
really
indeed
target
to lift up
few
small
to fetch
to move
to get
to pick up
to force
頭腦 tau4 nou5
mastermind; centre of control (Cantonese slang)
靈活 ling4 waak6
agile
wo4
and
執生 zap1 saang1
(slang) (of ability) to watch for, to be careful of; to be able to handle a tough and problematic situation; to improvise; to take things as they come
程度 cing4 dou6
Degree