一法通，萬法通 [－－－－万－－]

Jyutping jat1 faat3 tung1 ， maan6 faat3 tung1
Pinyin yī fǎ tōng ， wàn fǎ tōng

Definitions (Wiktionary)
  1. phrase, idiomatic
    grasp this one thing and you'll grasp everything; sort this one thing out and you'll sort out all the rest