剃頭挑子一頭熱 [－头－－－头热]

Jyutping
Pinyin tì tóu tiāo zi yī tóu rè

Definitions (CC-CEDICT)
  1. lit. only one end of the barber's pole is hot (idiom)
  2. fig. one-sided enthusiasm
  3. one party is interested, but the other, not so much
  4. (Note: In former days, street barbers carried their equipment on a pole, with tools and a stool at one end and a brazier at the other.)