to learn the secret techniques; to make a learning request
Definitions (粵典–words.hk)
動詞
透過觀察有能力嘅人做一啲嘢,從而學習嗰樣技藝 to learn skills by observing implicitly; literally: to steal teachings
佢做嘢嗰陣向攝影師偷師學藝,呢排影相進步咗。
佢做嘢𠮶阵向摄影师偷师学艺,呢排影相进步咗。
keoi5 zou6 je5 go2 zan6 hoeng3 sip3 jing2 si1 tau1 si1 hok6 ngai6, ni1 paai4 jing2 soeng2 zeon3 bou6 zo2. He secretly observes and learns techniques from the photographer when he is working. He has taken better photos recently.
Definitions (Wiktionary)
verb, Cantonese
to secretly observe and learn from someone without them knowing