管子 → ☊ Guan3zi3 
Guanzi or Guan Zhong 管仲 (-645 BC), famous politician of Qi 齐国/齐国 of Spring and Autumn period; Guanzi, classical book containing writings of Guan Zhong and his school ☊ 
Ống ☊ 管子 → ☊ guan3zi5 tube; pipe; drinking straw; CL:根gen1 ☊ Ống ☊ 管子 ☊ → 导管 ☊ → 输送管 ☊ → 
pipe