? （周朝國(guó)名） Zheng, a state in the Zhou Dynasty ? （姓氏） a surname: ～ 成功 Zheng Chenggong ◆鄭重 serious; solemn; earnest; 鄭重其事 take the matter seriously; act with due care and respect; assume a serious attitude towards ...; attach much importance to the matter; seriously in earnest