to talk sb round; to straighten sth out; to enlighten
Definitions (粵典–words.hk)
動詞
引導人去明白、理解某啲嘢，令對方唔再鑽牛角尖或者一直唔開心 to enlighten somebody; to help somebody to straighten out his/her thinking
佢唔明白父母點解離婚，所以成日都好唔開心，需要社工開導。
佢唔明白父母点解离婚，所以成日都好唔开心，需要社工开导。
He is unhappy all the time, as he doesn't understand why his parents got divorced. He needs a social worker to talk things out.
Definitions (Wiktionary)
verb
to bring someone to reason; to straighten things out; to help someone see what is right or sensible; to enlighten (syn.) 啟導, 启迪, 開悟, 啟示, 啟發, 启示, 启发, 啟迪, 启导, 开悟
Definitions (Kaifangcidian)
（沒有對應漢語詞彙）
Examples (Tatoeba—Mandarin-English)
Mandarin
教导学生，不到他想了解而不得其解的时候，不去开导他；不到他想表达意见却说不出来的时候，不去启发他。教给他一个方面的东西，他却不能由此而推知其它三个方面的东西，那就不再教他了。
教導學生，不到他想瞭解而不得其解的時候，不去開導他；不到他想表達意見卻說不出來的時候，不去啟發他。教給他一個方面的東西，他卻不能由此而推知其它三個方面的東西，那就不再教他了。
jiào dǎo xué sheng ， bù dào tā xiǎng liǎo jiě ér bù dé qí jiě de shí hou ， bù qù kāi dǎo tā ； bù dào tā xiǎng biǎo dá yì jiàn què shuō bù chū lái de shí hou ， bù qù qǐ fā tā 。 jiāo gěi tā yí gè fāng miàn de dōng xī ， tā què bù néng yóu cǐ ér tuī zhī qí tā sān gè fāng miàn de dōng xī ， nà jiù bù zài jiào tā le 。
When teaching a student, do not enlighten him until he wishes to understand what he could not. Do not inspire him until he wishes to express but could not. When teaching him one side of a solution, if he could not discover the other three sides, then do not teach him again.
Mandarin
没人管束或开导他。
沒人管束或開導他。
méi rén guǎn shù huò kāi dǎo tā 。