How to pronounce 天光 in Cantonese (4 out of 6):

天光 tin1 gwong1

(noun) daylight; (adverb) at daybreak; in the morning

吖 aa1

phonetic a, similar to 呵

-azine, see 吖嗪āqín [吖嗪]

final particle expressing consent and denial, liveliness and irritation