千叮嚀，萬囑咐 [－－咛－万嘱－]

Jyutping cin1 ding1 ning4 ， maan6 zuk1 fu3
Pinyin qiān dīng níng ， wàn zhǔ fù

Definitions (Wiktionary)
  1. phrase, emphatic
    to exhort again and again; to give advice repeatedly