One merciless dynasty (4)
I believe the answer is:
ming
'dynasty' is the definition.
(Chinese dynasty)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for ming that I've seen before include "Chinese dynasty and Roscommon TD" , "Porcelain associated with Chinese dynasty" , "Chinese dynasty noted for porcelain" , "An imperial Chinese dynasty" , "Porcelain named after ancient Chinese dynasty" .)