淘古井 (tou4 gu2 zeng2) — to clean out an ancient well in Cantonese
touˎ₄淘guˊ²古zengˊ²井Mandarin Pinyin: tao2 gu3 jing3
Meaning of 淘古井
nounto clean out an ancient well
nounmarry a rich widow for her money; have an affair with an older rich woman
nounmarrying a rich widow (slang)