HSK10+
qìngbǐnánshū
see also 罄竹難書|罄竹难书[qìngzhúnánshū]
罄笔难书 (罄筆難書)
too numerous to be cited (of atrocities or misdeeds) (idiom); see also 罄竹難書|罄竹难书[qìngzhúnánshū]
CC-CEDICT