variant pronunciation of shei2, who; surname Shui[cedict]
他
tāㄊㄚ
he; him[cedict]
掌握
zhǎng wòㄓㄤˇ ㄨㄛˋ
to grasp (often fig.); to master; to know well; to understand sth well and know how to use it; fluency; to control; to seize (initiative, opportunity, destiny)[cedict]