所長 [ㄙㄨㄛˇ ㄔㄤˊ; suo3 chang2] what one is good at
所長 [ㄙㄨㄛˇ ㄓㄤˇ; suo3 zhang3] head of an institute etc ◄ ►
所長 しょちょう noun (common) (futsuumeishi) chief head (of an office, of a laboratory) ◄ ►